High-integration control device for engine coolant

Abstract

The utility model discloses a high-integration control device for engine cooling liquid. The high-integration control device comprises a liquid buffer special pipeline, a degassing special pipeline and an electric control circulation device. One end of the liquid buffer special pipeline takes water from the cylinder body and then flows back to the electric control circulation device from the other end, the degassing special pipeline is integrated on the liquid buffer special pipeline, and the liquid buffer special pipeline comprises a liquid buffer water taking pipe and a degassing special pipeline, one end of the first liquid slow water return pipe is used for being connected with a liquid slow cooling device; one end of the connecting rubber pipe is hermetically communicated with the other end of the first liquid slow water return pipe; one end of the second liquid slow water return pipe is hermetically communicated with the other end of the connecting rubber pipe; one end of the third liquid slow return water pipe is hermetically communicated with the other end of the second liquid slow return water pipe, and the other end of the third liquid slow return water pipe is hermetically communicated with the electric control circulation device. Therefore, under the integrated cooperation of the liquid buffer pipeline, the degassing pipeline and the electric control circulation device, the stable operation of the whole vehicle cooling system can be ensured.

Description

Technical Field

[0001] The utility model relates to the field of engine design and manufacturing, in particular to a highly integrated control device for engine coolant. Background Art

[0002] In order to establish a foothold in the development of the modern automobile industry and face the vision of the automobile industry development in 2035, we will further strengthen the "low-carbonization, informationization, and intelligence" of automobile industry technology. Existing commercial vehicle powertrains include: traditional energy powertrains; new energy powertrains. The former include: diesel engines, natural gas engines, etc.; the latter include: hydrogen fuel engines, methanol engines, ammonia engines, hybrid fuel engines, fuel cell power, etc.

[0003] For the existing traditional energy power, the coolant control device mainly consists of:

[0004] 1) The mechanical thermostat realizes the conversion of the coolant flow channel. Briefly describe the working principle: when the engine is idling or unloaded at low speed, the engine coolant temperature is not high, the flow valve is closed, and the coolant flows in a closed loop inside the engine to achieve rapid warm-up; when the coolant temperature rises to the flow valve opening temperature, the coolant partially flows into the radiator, and at this time the radiator mainly dissipates heat through the vehicle facing the wind; when the coolant temperature reaches the flow valve full opening temperature or above, the coolant all flows into the radiator, the cooling fan continues to work to dissipate heat, and the engine's heat dissipation capacity reaches the maximum. If the water temperature continues to be higher than 108°C, the engine triggers a high temperature alarm, the engine completes torque limiting self-rescue, and reduces the speed until the alarm is lifted.

[0005] The existing mechanical wax thermostat has the following defects:

[0006] 1. Based on the characteristics of paraffin formula, the opening temperature is fixed and cannot be adjusted after leaving the factory, and cannot be adjusted by customers; the full opening cycle is long, the response speed is slow, and it is impossible to achieve rapid cooling, which is prone to high water temperature, inducing local overheating and cracking failures in high-temperature components such as cylinder heads and cylinder blocks;

[0007] 2. The normal working water temperature of the engine is low, which leads to low oil temperature, higher oil viscosity, greater running resistance of internal moving parts and high fuel consumption; the heat generated by engine combustion is mostly absorbed by the coolant, resulting in low thermal efficiency of the whole machine;

[0008] 2) The degassing system realizes high-temperature degassing of the engine. The existing degassing system is generally divided into separate degassing for each cylinder.

[0009] The degassing system of the prior art has the following defects:

[0010] 1. For single-cylinder degassing, multi-cylinder engines need to gather the gas in one place after outflow, and the degassing system structure is complex and inconvenient to assemble; the structural rigidity is poor, and additional auxiliary fixation is required, which is expensive; the structural versatility is poor, and the degassing interface boundaries of different supporting customers are different, which requires repeated design;

[0011] 2. For degassing of the retarder model, an additional external mixing interface is required. Currently, the "T-type" design is developed, and air blockage is prone to occur at the mixing point, causing backflow;

[0012] 3) Matching retarder models, specially developed and designed pipelines: the existing technical solutions are newly designed and developed for the boundaries of the entire vehicle, with complex structures and poor generalization;

[0013] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to a person skilled in the art. Utility Model Content

[0014] The utility model aims to provide a highly integrated control device for engine coolant, which ensures the stable operation of the cooling system of the whole vehicle through the integrated cooperation of a liquid buffer pipeline, a degassing pipeline and an electronically controlled circulation device.

[0015] To achieve the above-mentioned purpose, the utility model provides a highly integrated control device for engine coolant, including a special liquid buffer pipeline, a special degassing pipeline and an electronically controlled circulation device. One end of the special liquid buffer pipeline takes water from the cylinder body and flows back to the electronically controlled circulation device from the other end. The special degassing pipeline is integrated in the special liquid buffer pipeline. The special liquid buffer pipeline includes a liquid buffer water intake pipe, a first liquid buffer return pipe, a connecting hose, a second liquid buffer return pipe and a third liquid buffer return pipe; one end of the liquid buffer water intake pipe is used to take water from the cylinder body, and the other end is used to connect with the liquid buffer cooling device; one end of the first liquid buffer return pipe is used to connect with the liquid buffer cooling device; one end of the connecting hose is sealed and connected to the other end of the first liquid buffer return pipe; one end of the second liquid buffer return pipe is sealed and connected to the other end of the connecting hose; one end of the third liquid buffer return pipe is sealed and connected to the other end of the second liquid buffer return pipe, and the other end of the third liquid buffer return pipe is sealed and connected to the electronically controlled circulation device.

[0016] In a preferred embodiment, the liquid slow water special pipeline also includes a post-treatment water intake joint, a reserved water intake port, a degassing hole and a warm air water intake joint; the post-treatment water intake joint is arranged on the second liquid slow water return pipe, and is used to take water through the post-treatment water intake port; the reserved water intake port is arranged on the second liquid slow water return pipe and is sealed with a screw plug; the degassing hole is arranged on the third liquid slow water return pipe, and the degassing hole is used for connecting the degassing special pipeline and taking air; the warm air water intake joint is arranged on the third liquid slow water return pipe, and the warm air water intake joint is used to connect to the reserved water intake port to achieve uninterrupted warm air water supply.

[0017] In a preferred embodiment, the liquid slow water special pipeline also includes a first bracket, a rubber sleeve, a strong hoop, a second bracket and a third bracket, a fourth bracket and a first O-ring and a second O-ring; the first bracket is arranged at the end face of the flywheel housing, and the liquid slow water intake pipe is fastened to the cylinder head by a second bolt and a wiring harness bolt; the first liquid slow water return pipe and the liquid slow water intake pipe are fastened side by side to the first bracket through a rubber sleeve and using a first bolt and a nut, the liquid slow water return pipe and the second liquid slow water return pipe are connected through a connecting rubber hose and fastened by a strong hoop; the second liquid slow water return pipe is fixed to the cylinder head through the second bracket and the third bracket; the left end of the third liquid slow water return pipe is fixedly connected to the cylinder head through the fourth bracket; the second liquid slow water return pipe and the third liquid slow water return pipe are connected by a plug-in type, and double radial sealing is achieved by using a first O-ring and a second O-ring.

[0018] In a preferred embodiment, the degassing pipeline includes a degassing pipe, which is connected to the degassing hole through a second water-passing bolt and is sealed by a second composite sealing gasket. The coolant flows into the degassing pipe from the front end of the cylinder head through the third liquid slow return pipe and the degassing hole.

[0019] In a preferred embodiment, the electrically controlled circulation device includes a seat body and an electrically controlled thermostat; the seat body is a cavity structure, and the seat body includes a first mounting surface and a second mounting surface that are arranged opposite to each other, the first mounting surface is used to connect with the cooling passage of the engine body, and a coolant inlet and a small circulation outlet are arranged at the first mounting surface; the electrically controlled thermostat is arranged at the second mounting surface, and the electrically controlled thermostat includes a cover, a thermostat body, a thermostat lower bracket and a glue-hanging sealing body, a small circulation sealing plate and an electric heating rod; the cover is a hollow structure, and the cover includes a mounting portion, and the mounting portion extends from the mounting hole of the second mounting surface into the cavity structure of the seat body; the thermostat body A wax bag is arranged inside the thermostat body in the annular structure of the installation part; the lower bracket of the thermostat and the rubber seal are respectively arranged at the lower and upper parts of the thermostat body; the small circulation sealing plate is arranged at the lower end of the thermostat body; the electric heating rod is arranged inside the thermostat body, and the electric heating rod is connected with the typical data of the vehicle ECU; wherein the ECU can control the electric heating rod to heat the wax bag and accelerate its melting, so that the rubber seal compresses the spring located between the rubber seal and the lower bracket of the thermostat, and drives the small circulation sealing plate and the rubber seal to move synchronously, so as to realize the rapid conversion of the electric control circulation device from the small circulation state to the large circulation state.

[0020] In a preferred embodiment, the electronically controlled thermostat also includes a large circulation flow port, a liquid slow water return port, a water temperature sensor and an electronically controlled connector; the large circulation flow port is connected between the hollow structure of the cover and the annular structure of the mounting portion. When the electronically controlled circulation device is in a small circulation state, the large circulation flow port is blocked by the rubber seal, and a large circulation cavity is formed in the hollow structure of the cover; the liquid slow water return port is arranged on the top of the seat body, and the lower part of the liquid slow water return port is connected to the internal cavity of the seat body; the water temperature sensor is arranged in the sensor hole on the seat body, and the water temperature sensor is connected to the ECU typical data. The water temperature sensor is used to monitor the temperature information of the coolant in the seat body in real time, and feed back the temperature information to the ECU in real time; the electronically controlled connector is arranged at the thermostat body, and the electronically controlled connector is respectively connected to the electric heating rod and the ECU typical data.

[0021] In a preferred embodiment, the electric thermostat also includes a pressure relief valve, which is arranged on the cover, and the pressure relief valve includes an upper seal, a lower seal, a steel ball and a sleeve; the upper seal is arranged on the inner side of the cover wall; the lower seal is arranged on the outer side of the cover wall and is connected to the upper seal; the steel ball is arranged in the lower seal; the sleeve is embedded in the lower seal and confines the steel ball between the upper seal and the sleeve.

[0022] In a preferred embodiment, the diameter of the steel ball is larger than the diameter of the upper seal, the diameter of the lower seal is larger than the diameter of the steel ball, the sleeve and the lower seal are pressed together, and the inner diameter of the sleeve is smaller than the diameter of the steel ball.

[0023] In a preferred embodiment, the electrically controlled thermostat also includes a large circulation outlet, which is arranged on the cover, and the large circulation outlet is connected to the hollow structure of the cover. When the electrically controlled circulation device is in the large circulation state, most of the coolant flows from the large circulation outlet to the radiator.

[0024] In a preferred embodiment, the electric thermostat also includes a sealing ring, which is arranged in a sealing ring groove on the second mounting surface of the base body, and the sealing ring includes a sealing ring body, a sealing ring positioning boss and a sealing ring clamping point; the sealing ring body is in the shape of a glasses hole, and the shape of the sealing ring body matches the shape of the sealing ring groove; the sealing ring positioning boss is used to fix the sealing ring in the sealing ring groove positioning hole to prevent the sealing ring from shifting; the sealing ring clamping point is used to achieve stable and uniform force on both sides of the sealing ring, and keep the sealing ring locked in the sealing ring groove.

[0025] Compared with the prior art, the highly integrated control device for engine coolant of the utility model has the following beneficial effects: the liquid buffer pipeline is highly integrated, highly versatile and easy to assemble; the liquid buffer pipeline includes post-treatment water intake and warm air water intake; the liquid buffer pipeline adopts a split type, most of the whole can be realized in a single state, and only the tail is adjusted to meet customer needs; the pipe mouth adopts a plug-in type and is sealed with a double O-ring structure to ensure good sealing and easy assembly. The degassing pipeline is highly integrated, including cylinder head degassing and liquid buffer degassing, with a simple and reliable structure, ensuring that the coolant is degassed before entering the electronic control circulation device, avoiding air mixed in the coolant, causing irreversible corrosion to the internal parts of the engine, reducing the pumping efficiency of the water pump, and improving the reliability of the engine; high fluidity, the degassing pipe is designed as a "Y" type connecting structure, with lower overall resistance, reducing the coolant backflow failure caused by high cylinder head pressure. The electronically controlled circulation device is highly modularized, integrating components such as the seat, electronically controlled thermostat, and water temperature sensor. The engine runs at a continuously high water temperature, and the water temperature and opening and closing actions are linked in layers, so that both high and low water temperatures can be quickly opened and closed. The electronically controlled circulation device can control water temperatures based on specific market segments: it can realize the input of different water temperature control programs for engines in different regions and working conditions, with high universality and low development costs. The electronically controlled circulation device can maintain the thermal balance of the engine, increase the overall water temperature, reduce the friction resistance of the moving parts inside the engine, and reduce the power consumption of accessories. The electronically controlled circulation device has electronically controlled heating function, and the electronically controlled heating command responds quickly, with a total reaction time of <30s, which is sufficient to cope with complex operating conditions and ensure the safe operation of the engine. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic diagram of the main structure of a highly integrated control device according to an embodiment of the present invention;

[0027] Figure 2 It is a schematic diagram of the main structure of a liquid buffer special pipeline of a highly integrated control device according to an embodiment of the present invention;

[0028] Figure 3 It is a partial cross-sectional view of a connection of a liquid buffer special pipeline of a highly integrated control device according to an embodiment of the present invention;

[0029] Figure 4 It is a schematic diagram of the main structure of a degassing special pipeline of a highly integrated control device according to an embodiment of the present invention;

[0030] Figure 5 is a three-dimensional exploded schematic diagram of an electric control flow device of a highly integrated control device according to an embodiment of the present invention;

[0031] Figure 6 It is a schematic diagram of the main structure of the electric control flow device seat of the highly integrated control device according to one embodiment of the present invention;

[0032] Figure 7 is a schematic cross-sectional structural diagram of a seat body of a highly integrated control device according to an embodiment of the present invention;

[0033] Figure 8 is a schematic diagram of the three-dimensional structure of a base body of a highly integrated control device according to an embodiment of the present invention;

[0034] Fig. 9 is a schematic cross-sectional structural diagram of an electrically controlled thermostat of a highly integrated control device according to an embodiment of the present invention;

[0035] Fig.10 is a schematic diagram of the main structure of an electric-controlled thermostat of a highly integrated control device according to an embodiment of the present invention;

[0036] Fig.11 is a schematic diagram of the rear structural view of an electronically controlled thermostat of a highly integrated control device according to an embodiment of the present invention;

[0037] Fig.12 is a schematic cross-sectional structural diagram of an electrically controlled thermostat of a highly integrated control device according to an embodiment of the present invention;

[0038] Fig.13 It is a schematic diagram of the main structure of the sealing ring of the electric control flow device of the high-integration control device according to one embodiment of the present invention.

[0039] Description of main reference numerals:

[0040] 1-liquid buffer special pipeline, 1-1-first bolt, 1-2-nut, 1-3-first bracket, 1-4-rubber sleeve, 1-5-second bolt, 1-6-wiring harness bolt, 1-7-liquid buffer water pipe, 1-8-first liquid buffer return pipe, 1-9-strong hoop, 1-10-connecting hose, 1-11-second bracket, 1-12-first water-through bolt, 1-13-first composite sealing gasket, 1-14-post-processing water intake joint, 1-15-screw plug, 1-16-third bracket, 1-17-second liquid buffer return pipe, 1-18-third liquid buffer return pipe, 1 -19-Fourth bracket, 1-20-Warm air water inlet connector, 1-21-First O-ring, 1-22-Second O-ring, 1-23-Degassing hole, 2-Degassing special pipeline, 2-1-Degassing pipe, 2-2-Second water bolt, 2-3-Second composite sealing gasket, 3-Electrically controlled circulation device, 3-1-Liquid slow return water sealing ring, 3-2-Third composite sealing gasket, 3-3-Water temperature sensor, 3-4-Seat, 3-4-1-Coolant inlet, 3-4-2-Small circulation summary chamber, 3-4-3-Large circulation outlet, 3-4-4-Coolant storage cavity, 3-4-5-small circulation flow port, 3-4-6-small circulation outlet, 3-4-7-parallel outlet, 3-4-8-sensor hole, 3-4-9-liquid slow return water port, 3-4-10-liquid slow return water sealing ring groove, 3-4-11-cover seat threaded hole, 3-4-12-sealing ring groove, 3-4-13-sealing ring groove positioning hole, 3-5-sealing ring, 3-5-1-sealing ring body, 3-5-2-sealing ring positioning boss, 3-5-3-sealing ring card point, 3-6-bolt, 3-7-electrically controlled thermostat, 3-7-1-electrically controlled connector, 3-7- 2-circlip, 3-7-3-large circulation outlet, 3-7-4-thermostat body, 3-7-5-glue sealing body, 3-7-6-sealing cover, 3-7-7-thermostat hanging groove, 3-7-8-wax bag, 3-7-9-electric heating rod, 3-7-10-thermostat lower bracket, 3-7-11-small circulation sealing plate, 3-7-12-wiring harness fixing hole, 3-7-13-cover seat sealing hole, 3-7-14-pressure relief valve, 3-7-14-1-upper seal, 3-7-14-2-steel ball, 3-7-14-3-lower seal, 3-7-14-4-sleeve. DETAILED DESCRIPTION

[0041] The specific implementation modes of the present invention are described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific implementation modes.

[0042] Unless explicitly stated otherwise, throughout the specification and claims, the term “comprise” or variations such as “include” or “comprising”, etc., will be understood to include the stated elements or components but not to exclude other elements or components.

[0043] like Figure 1 As shown, a highly integrated control device for engine coolant according to a preferred embodiment of the utility model includes three subsystems: a liquid buffer special pipeline 1, a degassing special pipeline 2, and an electronically controlled circulation device 3. One end of the liquid buffer special pipeline 1 takes water from the cylinder body and flows back to the electronically controlled circulation device 3 from the other end, and the degassing special pipeline 2 is integrated in the liquid buffer special pipeline 1. The connection between the subsystems is as follows: the liquid buffer special pipeline 1 is divided into an inflow system and an outflow system; the two are connected by a pipe clamp bracket; the degassing special pipeline 2 integrates cylinder head degassing and liquid buffer degassing, and is fixed to the front end of the cylinder head and the liquid buffer return water pipeline 1 by water-through bolts; the electronically controlled circulation device 3 senses the water temperature information at all times, and the ECU controls the electronically controlled valve to realize the conversion of the coolant passage, and the liquid buffer return water pipeline is sealed with it through a liquid buffer return water sealing ring, and is fastened by bolts.

[0044] like Figure 2 , Figure 3 As shown, in some embodiments, the liquid slow water special pipeline: the coolant circulation direction is to take water from the cylinder body, and flow into the liquid slow water cooling through the liquid slow water intake pipe 1-7; after completing the cooling function, it flows into the seat body 3-4 through the first liquid slow water return pipe 1-8, the second liquid slow water return pipe 1-17, and the third liquid slow water return pipe 1-18; the second liquid slow water return pipe 1-17 includes a water intake port and a reserved water intake port, and the water intake port is for post-processing water intake, and after flowing into the post-processing system, it is divided into two water channels: the cooling nozzle and the heating urea tank, which has strong specialization; the third liquid slow water return pipe 1-18 includes a water intake port and a degassing hole 1-23, and the water intake port is for warm air water intake (normally open), which is used to increase the temperature of the cab and ensure a comfortable driving experience. The degassing port is connected to the degassing special pipeline 2 to realize warm air degassing, avoid increasing the resistance of the cooling system and corroding the pipeline, and deteriorate the coolant circulation efficiency, which ultimately leads to overheating of the whole machine and causes failure.

[0045] In some embodiments, the structure of the liquid buffer special pipeline is connected as follows: a liquid buffer water intake pipe 1-7, one end of which is fastened to the cylinder head through a second bolt 1-5 and a wiring harness bolt 1-6 (sealed by the body O-ring); the first liquid buffer return pipe 1-8 and the liquid buffer water intake pipe 1-7 are fastened side by side to the first bracket 1-3 through a rubber sleeve 1-4 using a first bolt 1-1 and a nut 1-2, and the first bracket 1-3 is fixed to the end face of the flywheel housing; the first liquid buffer return pipe 1-8 and the first liquid buffer return pipe 1-8 are fastened to the first bracket 1-3 through a rubber sleeve 1-4 using a first bolt 1-1 and a nut 1-2. The second liquid slow return water pipe 1-17 is connected by a connecting hose 1-10 and fastened by a strong hoop 1-9; the second liquid slow return water pipe 1-17 is fixed to the cylinder head through a second bracket 1-11 and a third bracket 1-16, and a water intake is reserved. This water intake is sealed with a screw plug 1-15 and a first composite sealing gasket 1-13. The other water intake is for post-processing water intake, which is composed of a first water passing bolt 1-12 and a post-processing water intake joint 1-14, and is sealed with two The first composite sealing gasket 1-13 completes the sealing; the second liquid slow return pipe 1-17 and the third liquid slow return pipe 1-18 are connected by plug-in, that is, the third liquid slow return pipe 1-18 is inserted into the second liquid slow return pipe 1-17, and the first O-ring 1-21 and the second O-ring 1-22 are used to achieve double radial sealing to ensure that the coolant does not leak; the other end of the third liquid slow return pipe 1-18 is fastened to the seat body 3-4 in the electric control circulation device 3 with bolts, Sealing is achieved with a liquid slow return water sealing ring 3-1; the left end of the third liquid slow return water pipe 1-18 is fixed to the cylinder head by the fourth bracket 1-19, and the reserved water inlet is connected to the warm air water inlet joint 1-20 to achieve uninterrupted warm air water supply, and the reserved degassing hole 1-23 is connected to the second water bolt 2-2 in the degassing special pipeline 2, and sealing is achieved by two second composite sealing gaskets 2-3, and the coolant flows from the third liquid slow return water pipe 1-18 into the degassing pipe 2-1.

[0046] like Figure 4 See Figure 1 In some embodiments, the degassing special pipeline 2 is roughly as follows: the coolant flows into the degassing pipe 2-1 from the front end of the cylinder head and the degassing hole 1-23 of the third liquid slow return pipe 1-18 and converges. The convergent outlet structure is a "Y"-shaped layout to form an engine degassing system. The converged coolant flows into the expansion water tank (including the pressure cover). The expansion water tank is internally arranged with criss-cross barrier cavities to achieve long-term chamber retention of the coolant. The gas remains in the upper part of the expansion water tank due to its light density. The coolant is separated from the gas due to its high density and flows continuously to the water supply pipeline; the stored gas gradually increases and the pressure increases, reaching the preset pressure limit of the pressure cover, the pressure cover opens, and the pressure relief is completed.

[0047] In some embodiments, the degassing dedicated pipeline 2 is structurally connected as follows: the degassing dedicated pipeline 2 includes a degassing pipe 2-1, second water-through bolts 2-2 at both ends, and a second composite sealing gasket 2-3. At one end, the second water-through bolt 2-2 is fixed to the third liquid slow return water pipe 1-18 and sealed by the second composite sealing gasket 2-3; at the other end, the second water-through bolt 2-2 is fixed to the front end of the cylinder head and sealed by the second composite sealing gasket 2-3. The second water-through bolts 2-2 at both ends are connected to the degassing pipe 2-1 through connecting holes. The degassing pipe 2-1 is branched into two sections, one end is connected to the cylinder head, and the other end is connected to the third liquid slow return water pipe 1-18. A "Y" type confluence structure is adopted at the mixing point to avoid excessive pressure on the cylinder head, which causes poor liquid slow degassing and leads to reflux. After confluence, the coolant flows into the expansion water tank through the expansion water tank connecting pipe.

[0048] like Figure 5 As shown, in some embodiments, the electric control circulation device comprises a liquid slow return water sealing ring 3-1, a third composite sealing gasket 3-2, a water temperature sensor 3-3, a seat 3-4, a sealing ring 3-5, a bolt 3-6, and an electric control thermostat 3-7. The coolant flows into the electric control circulation device through two loops: route one, from the third liquid slow return water pipe 1-18 into the liquid slow return water port 3-4-10; route two, from the machine cooling outlet into the coolant inlet 3-4-1 of the electric control circulation device. After the coolant flows into the seat body 3-4, it quickly fills up the coolant storage chamber 3-4-4. When the engine is in idle state, low speed or warm-up state, the water temperature is low, and the electronically controlled circulation device 3 is in the small circulation working mode. The coolant circulates internally, that is, it flows from the coolant storage chamber 3-4-4 into the two small circulation flow ports 3-4-5 and the parallel outlet 3-4-7 and is collected in the small circulation collecting chamber 3-4-2, and flows back to the engine from the small circulation outlet 3-4-6, so as to quickly increase the water temperature. When the engine water temperature rises rapidly, the electronically controlled circulation device 3 is in the large circulation working mode, and the coolant circulates externally, that is, it flows from the coolant storage chamber 3-4-4 into the large circulation flow port 3-4-3 between the rubber sealing body 3-7-5 and the seat body 3-4 into the large circulation outlet 3-7-3, but there is still a small amount of coolant, which quickly flows into the small circulation outlet 3-4-6 through the parallel outlet 3-4-7 and flows back to the engine, thereby reducing the overall resistance of the cooling system.

[0049] like Figures 6 to 8 As shown, in some embodiments, the structural connection of the seat body 3-4 is roughly as follows: the seat body 3-4 includes a coolant inlet 3-4-1, a small circulation summary chamber 3-4-2, a large circulation flow port 3-4-3, a coolant storage chamber 3-4-4, a small circulation flow port 3-4-5, a small circulation outlet 3-4-6, a parallel outlet 3-4-7, a sensor hole 3-4-8, a liquid slow return water port 3-4-9, a liquid slow return water sealing ring groove 3-4-10, a cover seat threaded hole 3-4-11, a sealing ring groove 3-4-12, and a sealing ring groove positioning hole 3-4-13.

[0050] like Fig.13 As shown, in some embodiments, the sealing ring 3-5 includes: a sealing ring body 3-5-1, a sealing ring positioning boss 3-5-2, and a sealing ring clamping point 3-5-3. The seat body 3-4 and the electric thermostat 3-7 cooperate with the cover seat sealing hole 3-4-13 on the cover 3-7-6 and the cover seat threaded hole 3-4-11, the bolt 3-6 completes the fastening, and the sealing ring 3-5 completes the sealing (the sealing ring body 3-5-1 is the sealing body, and the sealing ring clamping point 3-5-3 realizes that both sides of the sealing ring are firmly and evenly stressed and keeps the sealing ring locked in the sealing ring groove 3-4-12), and the sealing ring positioning boss 3-5-2 fixes the sealing ring in the sealing ring groove positioning hole (3-4-13) to prevent the sealing ring from shifting.

[0051] like Figures 9 to 12 As shown, in some embodiments, the electric control thermostat includes an electric control connector 3-7-1, a retaining spring 3-7-2, a large circulation outlet 3-7-3, a thermostat body 3-7-4, a glue seal 3-7-5, a cover 3-7-6, a thermostat hanging groove 3-7-7, a wax bag 3-7-8, an electric heating rod 3-7-9, a thermostat lower bracket 3-7-10, a thermostat small circulation sealing plate 3-7-11, a harness fixing hole 3-4-12, a cover seat sealing hole 3-4-13, and a pressure relief valve 3-7-14. The thermostat body 3-7-4 includes: a wax bag 3-7-8, a thermostat lower bracket 3-7-10, a thermostat small circulation sealing plate 3-7-11, and a glue seal 3-7-5. The cover 3-7-6 includes: a large circulation outlet 3-7-3, a thermostat hanging groove 3-7-7, a harness fixing hole 3-4-12, a cover seat sealing hole 3-4-13, and a pressure relief valve 3-7-14. The pressure relief valve 3-7-14 includes: an upper seal 3-7-13-1, a steel ball 3-7-13-2, a sleeve 3-7-13-3, and a lower seal 3-7-13-4.

[0052] In some embodiments, the electric control connector 3-7-1 is fixed by a retaining spring 3-7-2; the rubber seal 3-7-5 and the large circulation outlet 3-7-3 seal and block the large circulation, and the engine is blocked when it is stopped; when the wax bag 3-7-8 in the thermostat body 3-7-4 senses the water temperature and the solid material liquefies, the spring is compressed, and the thermostat small circulation sealing plate 3-7-11 moves synchronously with the rubber seal 3-7-5 to close the small circulation flow port 3-4-5 and open the large circulation flow port 3-4-3, and the coolant flows into the large circulation outlet 3-7-3, but some of it still flows rapidly into the small circulation outlet 3-4-6 through the parallel outlet 3-4-7 and flows back to the engine. The electric heating rod 3-7-9 is inserted into the thermostat body 3-7-4 of the electric control thermostat 3-7, and is used to heat the wax bag 3-7-8 by electricity, so that it melts quickly and the electric control thermostat 3-7 is opened quickly.

[0053] In some embodiments, the thermostat lower bracket 3-7-10 in the thermostat body 3-7-4 of the electronically controlled thermostat 1 compresses the spring and is rotated and pressed into the thermostat hanging groove 3-7-7 to achieve fixation with the cover 3-7-6; the pressure relief valve 3-7-14 is located on the cover 3-7-6. During processing, the upper seal 3-7-14-1 and the lower seal 3-7-14-4 are first processed, and the steel ball 3-7-14-2 is installed, and finally the cover 3-7-14-3 is pressed. The working principle of the pressure relief valve 3-7-14 is as follows: during the gradual filling of coolant, the internal gas of the engine passes through the gap between the steel ball 3-7-14-2 and the lower seal 3-7-14-4, and flows out through the upper seal 3-7-14-1; after the coolant is filled, the internal resistance of the engine is greater than the external resistance, and the steel ball is completely sealed at the upper seal 3-7-14-1, and no coolant flows out.

[0054] In some embodiments, the coolant inlet 3-4-1 is connected to the machine cooling outlet (not shown) and sealed with a sealing ring (provided by the machine cooling, not shown); the coolant always flows into the seat body 3-4 from two routes, one route is through the coolant inlet 3-4-1, and the other route is through the liquid return port 3-4-9; the sensor hole 3-4-8 on the seat body 3-4 fixes the water temperature sensor 3-3 and is sealed by the third composite sealing gasket 3-2; the water temperature sensor senses the coolant temperature at all times and transmits electrical signals to the ECU through the wiring harness, and the ECU makes a judgment based on the signal; the coolant flowing into the seat body 3-4 is stored in the coolant storage chamber 3-4-4.

[0055] In some embodiments, when the engine is stopped, idling or warming up, the coolant temperature is low and the small cycle is in a normally open state, that is, the coolant flows back to the engine through the small cycle flow port 3-4-5 and the small cycle outlet 3-4-6, and the cycle repeats.

[0056] In some embodiments, the highly integrated control device for engine coolant of the present invention can adapt to the following working conditions:

[0057] Working condition 1: The engine speed increases steadily, the water temperature increases slowly and continuously, the wax package 3-7-8 inside the thermostat body 3-7-4 melts due to the heat, compressing the spring of the thermostat body 3-7-4, and the small circulation sealing plate 3-7-11 of the thermostat moves synchronously with the rubber sealing body 3-7-5, so that the small circulation flow port 3-4-5 is gradually blocked; the large circulation flow port 3-4-3 gradually flows until it is fully opened.

[0058] Working condition 2: For models equipped with a retarder, when the retarder is turned on, the engine ECU uses PWM communication to connect the electronic control connector 3-7-1 through the wiring harness to complete the electrical signal transmission, so that 24V is supplied to the electric heating rod 3-7-9 to quickly melt the wax bag 3-7-8 and quickly open the large circulation flow port 3-4-3 to avoid excessive water temperature.

[0059] Working condition three: Achieve differentiated water temperature control for different market segments. For vehicles operating in cold and high altitude environments for a long time, the operating water temperature can be appropriately increased by 3-6°C; for vehicles operating in high temperature environments for a long time, the operating water temperature can be slightly reduced (1-3°C). By adjusting the ECU control strategy, highly economical operating water temperatures can be achieved in different working conditions to ensure the normal operation of the engine.

[0060] In summary, the highly integrated control device for engine coolant of the utility model has the following advantages: the liquid buffer pipeline is highly integrated, highly versatile and easy to assemble; the liquid buffer pipeline includes post-treatment water intake and warm air water intake; the liquid buffer pipeline adopts a split type, and most of the overall state can be achieved in a single state, and only the tail is adjusted to meet customer needs; the pipe mouth adopts a plug-in type and is sealed with a double O-ring structure to ensure good sealing and easy assembly. The degassing pipeline is highly integrated, including cylinder head degassing and liquid buffer degassing, with a simple and reliable structure, ensuring that the coolant is degassed before entering the electronic control circulation device, avoiding air mixed in the coolant, causing irreversible corrosion to the internal parts of the engine, reducing the pumping efficiency of the water pump, and improving the reliability of the engine; high fluidity, the degassing pipe is designed as a "Y" type connecting structure, with lower overall resistance, reducing the coolant backflow failure caused by high cylinder head pressure. The electronically controlled circulation device is highly modularized, integrating components such as the seat, electronically controlled thermostat, and water temperature sensor. The engine runs at a continuously high water temperature, and the water temperature and opening and closing actions are linked in layers, so that both high and low water temperatures can be quickly opened and closed. The electronically controlled circulation device can control water temperatures based on specific market segments: it can realize the input of different water temperature control programs for engines in different regions and working conditions, with high universality and low development costs. The electronically controlled circulation device can maintain the thermal balance of the engine, increase the overall water temperature, reduce the friction resistance of the moving parts inside the engine, and reduce the power consumption of accessories. The electronically controlled circulation device has electronically controlled heating function, and the electronically controlled heating command responds quickly, with a total reaction time of <30s, which is sufficient to cope with complex operating conditions and ensure the safe operation of the engine.

[0061] The foregoing description of specific exemplary embodiments of the utility model is for the purpose of illustration and illustration. These descriptions are not intended to limit the utility model to the precise form disclosed, and it is clear that many changes and variations can be made based on the above teachings. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the utility model and its practical application, so that those skilled in the art can realize and utilize various different exemplary embodiments of the utility model and various different options and changes. The scope of the utility model is intended to be defined by the claims and their equivalents.

Claims

1. A highly integrated control device for engine coolant, characterized in that: It includes a liquid buffer special pipeline, a degassing special pipeline and an electric control circulation device. One end of the liquid buffer special pipeline takes water from the cylinder body and flows back to the electric control circulation device from the other end. The degassing special pipeline is integrated in the liquid buffer special pipeline. The liquid buffer special pipeline includes: A liquid buffer water intake pipe, one end of which is used to take water from the cylinder body, and the other end is used to connect to the liquid buffer cooling device; A first liquid slow return pipe, one end of which is used to be connected to the liquid slow cooling device; A connecting hose, one end of which is sealed and connected to the other end of the first liquid slow return pipe; A second liquid slow return pipe, one end of which is sealed and connected to the other end of the connecting hose; and One end of the third liquid slow return pipe is sealed and connected with the other end of the second liquid slow return pipe, and the other end of the third liquid slow return pipe is sealed and connected with the electric control circulation device.

2. The highly integrated control device for engine coolant according to claim 1, characterized in that: The liquid buffer special pipeline also includes: A post-processing water intake joint, which is arranged on the second liquid slow return pipe and is used to take water through the post-processing water intake port; A reserved water intake is arranged on the second liquid slow return pipe and is sealed with a screw plug; A degassing hole, which is arranged on the third liquid slow return water pipe, and is used for connecting the degassing special pipeline and taking gas; and A warm air water intake connector is provided on the third liquid slow return water pipe, and the warm air water intake connector is used to be connected to the reserved water intake port to realize uninterrupted warm air water supply.

3. The highly integrated control device for engine coolant according to claim 2, characterized in that: The liquid buffer special pipeline also includes: A first bracket, which is arranged at the end surface of the flywheel housing, and the liquid slow water intake pipe is fastened and connected to the cylinder head through a second bolt and a harness bolt; The first liquid slow return pipe and the liquid slow water intake pipe are fastened to the first bracket side by side through the rubber sleeve and by first bolts and nuts. A strong hoop, the liquid slow return pipe and the second liquid slow return pipe are connected through the connecting hose and fastened by the strong hoop; A second bracket and a third bracket, wherein the second liquid slow return pipe is fixed to the cylinder head through the second bracket and the third bracket; A fourth bracket, through which the left end of the third liquid slow return pipe is fixedly connected to the cylinder head; and The first O-ring and the second O-ring, the second liquid slow return pipe and the third liquid slow return pipe are connected by plug-in, and the first O-ring and the second O-ring are used to achieve double radial sealing.

4. The highly integrated control device for engine coolant according to claim 3, characterized in that: The degassing special pipeline includes a degassing pipe, which is connected to the degassing hole through a second water-through bolt and is sealed by a second composite sealing gasket. The coolant flows from the front end of the cylinder head through the third liquid slow return pipe and the degassing hole into the degassing pipe.

5. The highly integrated control device for engine coolant according to claim 3, characterized in that: The electric control flow device comprises: A seat body having a hollow structure, the seat body comprising a first mounting surface and a second mounting surface arranged opposite to each other, the first mounting surface being used to connect with a cooling passage of an engine body, and a coolant inlet and a small circulation outlet being arranged at the first mounting surface; and An electrically controlled thermostat, which is arranged on the second mounting surface, and the electrically controlled thermostat comprises: A cover having a hollow structure, the cover comprising a mounting portion, the mounting portion extending from the mounting hole of the second mounting surface into the cavity structure of the seat body; A thermostat body, which is arranged in the annular structure of the mounting portion, and a wax bag is arranged inside the thermostat body; The lower bracket of the thermostat and the rubber-hanging sealing body are respectively arranged at the lower part and the upper part of the thermostat body; A small circulation sealing plate, which is arranged at the lower end of the thermostat body; and An electric heating rod, which is arranged inside the thermostat body and is connected to the typical data of the vehicle ECU; The ECU can control the electric heating rod to heat the wax bag and accelerate its melting, so that the rubber seal compresses the spring located between the rubber seal and the lower bracket of the thermostat, and drives the small circulation sealing plate and the rubber seal to move synchronously, thereby realizing the rapid conversion of the electrically controlled circulation device from a small circulation state to a large circulation state.

6. The highly integrated control device for engine coolant as claimed in claim 5, characterized in that: The electronically controlled thermostat further comprises: A large circulation flow port is connected between the hollow structure of the cover and the annular structure of the mounting portion. When the electric control flow device is in a small circulation state, the large circulation flow port is blocked by the rubber-hanging seal body, and a large circulation cavity is formed in the hollow structure of the cover; A liquid slow water return port, which is arranged on the top of the seat body, and the lower part of the liquid slow water return port is connected to the internal cavity of the seat body; A water temperature sensor is disposed in a sensor hole on the seat body, the water temperature sensor is typically connected to the ECU, and the water temperature sensor is used to monitor the temperature information of the coolant in the seat body in real time and feed the temperature information back to the ECU in real time; and An electric control connector is arranged at the thermostat body, and the electric control connector is respectively connected to the electric heating rod and the ECU typical data.

7. The highly integrated control device for engine coolant according to claim 5, characterized in that: The electronically controlled thermostat further comprises a pressure relief valve, which is arranged on the cover, and the pressure relief valve comprises: an upper seal, which is arranged on the inner side of the cover wall; A lower seal, which is arranged on the outer side of the cover wall and communicated with the upper seal; a steel ball disposed in the lower seal; and The sleeve is embedded in the lower seal and restricts the steel ball between the upper seal and the sleeve.

8. The highly integrated control device for engine coolant according to claim 7, characterized in that: The diameter of the steel ball is larger than the diameter of the upper seal, the diameter of the lower seal is larger than the diameter of the steel ball, the sleeve and the lower seal are pressed together, and the inner diameter of the sleeve is smaller than the diameter of the steel ball.

9. The highly integrated control device for engine coolant according to claim 5, characterized in that: The electric-controlled thermostat also includes a large circulation outlet, which is arranged on the cover. The large circulation outlet is connected to the hollow structure of the cover. When the electric-controlled circulation device is in a large circulation state, most of the coolant flows from the large circulation outlet to the radiator.

10. The highly integrated control device for engine coolant according to claim 5, characterized in that: It also includes a sealing ring, which is arranged in a sealing ring groove on the second mounting surface of the seat body, and the sealing ring includes: The sealing ring body is in the shape of a glasses hole, and the shape of the sealing ring body matches the shape of the sealing ring groove; A sealing ring positioning boss, which is used to fix the sealing ring in the sealing ring groove positioning hole to prevent the sealing ring from shifting; and The sealing ring clamping point is used to ensure that both sides of the sealing ring are stably and evenly stressed and keep the sealing ring locked in the sealing ring groove.

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