Integrated cylinder cover structure

Abstract

The invention discloses an integrated cylinder cover structure which is characterized in that a thermostat is arranged in a water jacket cavity on one side of the front end of a cylinder cover water jacket of an engine body; the water pump is arranged at the top of the front end of the engine body cylinder cover water jacket; the engine body cylinder cover water jacket is connected with the hydraulic buffer through a first pipeline; the hydraulic buffer is connected with the thermostat through a second pipeline; a small circulation water outlet of the thermostat is connected with the water pump through a small circulation pipeline; a large circulation water outlet of the thermostat is connected with the cooling water tank through a large circulation pipeline; the cooling water tank is connected with the water pump through a third pipeline. The thermostat is arranged at the front end of the engine body cylinder cover water jacket, pipelines from the thermostat to the water pump and from the thermostat to the cooling water tank are greatly shortened, meanwhile, the water pipelines are simplified, related parts are reduced, the cost is reduced, meanwhile, the thermostat is arranged more compactly, and the space utilization rate of an engine is increased.

Description

Technical Field

[0001] The present application relates to the field of engine technology, and in particular to an integrated cylinder head structure. Background Art

[0002] As people have higher and higher requirements for the safety performance of commercial vehicles, the engine configuration of hydraulic retarders has become a trend in the market industry. Hydraulic retarders can provide reliable auxiliary braking, especially on long downhill sections, while effectively reducing brake wear, extending the service life of tires, and improving vehicle operation rate and safety.

[0003] The use of the hydraulic retarder requires the engine to provide cooling water for cooling. The cooling water needs to cool the engine first, then cool the hydraulic retarder, and then pass through the thermostat and enter the small circulation to enter the engine or enter the large circulation to enter the cooling water tank according to the water temperature.

[0004] The prior art adopts an external thermostat solution, in which the thermostat is installed in the water path behind the cooling hydraulic buffer. The external thermostat is not compact enough, resulting in complicated water pipes, and also reduces the space utilization of the engine. Summary of the invention

[0005] The present application provides an integrated cylinder head structure, including: an engine body cylinder head water jacket, a water pump, a hydraulic buffer, a thermostat, a cooling water tank, a thermostat small circulation water outlet, a thermostat large circulation water outlet, a first pipeline, a second pipeline, a small circulation pipeline, a large circulation pipeline and a third pipeline;

[0006] The thermostat is arranged in the water jacket cavity at one side of the front end of the water jacket of the cylinder head of the engine body;

[0007] The water pump is arranged at the top of the front end of the water jacket of the cylinder head of the engine body;

[0008] The engine body cylinder head water jacket is connected to the hydraulic buffer through the first pipeline;

[0009] The hydraulic buffer is connected to the thermostat through the second pipeline;

[0010] The small circulation water outlet of the thermostat is connected to the water pump through the small circulation pipeline;

[0011] The large circulation water outlet of the thermostat is connected to the cooling water tank through the large circulation pipeline;

[0012] The cooling water tank is connected to the water pump through the third pipeline.

[0013] Optionally, the thermostat small circulation water outlet, the thermostat large circulation water outlet, the first pipeline, the second pipeline, the small circulation pipeline, the large circulation pipeline and the third pipeline are arranged outside the water jacket of the engine body cylinder head.

[0014] Optionally, the hydraulic buffer is arranged on the outside of the rear end side of the cylinder head water jacket of the engine body.

[0015] Optionally, the cooling water tank is arranged outside the front end side of the cylinder head water jacket of the engine body.

[0016] Optionally, a sensor is provided inside the thermostat for measuring the temperature of the coolant.

[0017] Optionally, a first valve and a second valve are provided inside the thermostat, the first valve is connected to the small circulation pipeline, and the second valve is connected to the large circulation pipeline.

[0018] Optionally, the coolant flows from the engine cylinder head through the first pipeline, passes through the hydraulic buffer, and then flows into the thermostat through the second pipeline. The thermostat determines whether the water temperature meets the standard through the sensor.

[0019] Optionally, the thermostat determines whether the water temperature meets the standard through the sensor; if it meets the standard, the thermostat opens the first valve, and the coolant flows to the water pump through the small circulation pipeline; if it does not meet the standard, the thermostat opens the second valve, and the coolant flows to the cooling water tank through the large circulation pipeline for cooling.

[0020] Optionally, the cooled coolant flows to the water pump through the third pipeline.

[0021] Optionally, a sealing gasket is provided at a connection portion between the outlet of the engine body cylinder head water jacket and the first pipeline.

[0022] It can be seen from the above technical solutions that this application has the following advantages:

[0023] 1. The thermostat is set at the front end of the water jacket of the cylinder head of the engine body. The pipelines from the thermostat to the water pump and from the thermostat to the cooling water tank are greatly shortened. At the same time, the water pipes are simplified, the related parts are reduced, and the cost is reduced.

[0024] 2. The thermostat is set at the front end of the engine cylinder head water jacket to make the thermostat layout more compact and improve the space utilization of the engine. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the structure of the integrated cylinder head;

[0026] Figure 2 is another structural schematic diagram of an integrated cylinder head;

[0027] Figure 3 A cross-sectional view of the thermostat in the integrated cylinder head. DETAILED DESCRIPTION

[0028] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside", "outside", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only used to illustrate the relative positional relationships between the various components or components, and do not particularly limit the specific installation orientations of the various components or components.

[0029] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0030] In addition, the terms "installed", "set", "provided with", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0031] In addition, the structures, proportions, sizes, etc. drawn in the drawings in the present application are only used to match the contents disclosed in the specification for the technical personnel in this field to understand and read, and are not used to limit the restrictive conditions under which the present application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in the present application without affecting the effects and purposes that can be achieved by the present application.

[0032] The following will be combined with the drawings in this application to clearly and completely describe the technical solutions in this application. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0033] For example, see Figures 1 to 3The present application provides an integrated cylinder head structure, including: an engine body cylinder head water jacket 01, a water pump 02, a hydraulic buffer 03, a thermostat 04, a cooling water tank 05, a thermostat small circulation water outlet 06, a thermostat small circulation water outlet 07, a first pipeline 08, a first pipeline 09, a small circulation pipeline 10, a large circulation pipeline 11 and a third pipeline 12.

[0034] Thermostat 04 is arranged in the water jacket cavity at one side of the front end of the engine cylinder head water jacket 01; the engine cylinder head water jacket 01 and the thermostat 04 are provided with through holes, bolts matching the through holes are screwed into the through holes of the engine cylinder head water jacket 01 and the thermostat 04, and the thermostat 04 is fixed to the engine cylinder head water jacket 01 by bolting. Thermostat 04 adjusts the temperature of the coolant by sensing the temperature of the coolant. Thermostat 04 is arranged in the water jacket cavity at one side of the front end of the engine cylinder head water jacket 01, and can directly sense the changes of the engine coolant, so as to respond in time.

[0035] The water pump 02 is arranged at the top of the front end of the engine body cylinder head water jacket 01; the water pump 02 is used to transport liquid or pressurize the liquid. Arranging the water jacket at the top of the front end of the engine body cylinder head water jacket 01 can use gravity to assist the flow of coolant, ensure that the coolant quickly reaches various positions of the engine, reduce the power of the water pump 02, and at the same time improve the utilization of space.

[0036] The engine cylinder head water jacket 01 is connected to the hydraulic buffer 03 through the first pipeline 08; the hydraulic buffer 03 plays a buffering role on the coolant in the engine. The coolant flows from the engine water outlet through the first pipeline 08 to the hydraulic buffer 03, and the hydraulic buffer 03 slows down the flow rate of the coolant. The hydraulic buffer 03 is connected to the thermostat 04 through the first pipeline 09; the hydraulic buffer 03 slows down the flow rate of the coolant and then flows into the thermostat 04 through the first pipeline 09.

[0037] The thermostat small circulation water outlet 06 is connected to the water pump 02 through the small circulation pipeline 10; the thermostat small circulation water outlet 07 is connected to the cooling water tank 05 through the large circulation pipeline 11; the cooling water tank 05 is connected to the water pump 02 through the third pipeline 12. When the working temperature of the engine is low, the thermostat 04 will open the first valve 13 to allow the coolant to flow to the water pump 02. The coolant can flow from the thermostat 04 to the water pump 02 through the small circulation pipeline 10, and then be sent back to the engine body cylinder head water jacket 01 through the water pump 02 for circulation. When the working temperature of the engine rises, the thermostat 04 will close the first valve 13 leading to the water pump 02, and open the second valve 14 at the same time, the coolant will first cool the water tank 05 for heat dissipation, then flow into the water pump 02 through the third pipeline 12, and then be sent back to the engine body cylinder head water jacket 01 by the water pump 02, so that the coolant enhances the cooling effect and prevents the engine from overheating.

[0038] Optionally, a sealing gasket is provided at the connection between the outlet of the engine body cylinder head water jacket 01 and the first pipeline 08 to prevent leakage of the coolant during circulation.

[0039] Optionally, the thermostat small circulation water outlet 06, the thermostat small circulation water outlet 07, the first pipeline 08, the first pipeline 09, the small circulation pipeline 10, the large circulation pipeline 11 and the third pipeline 12 are arranged outside the engine body cylinder head water jacket 01. The thermostat small circulation water outlet 06 is used to connect the small circulation pipeline 10, and the thermostat small circulation water outlet 07 is used to connect the large circulation pipeline 11; the first pipeline 08 is arranged at the bottom of the engine body cylinder head water jacket 01, and is used to transport the coolant from the engine body cylinder head water jacket 01 to the hydraulic buffer 03; the first pipeline 09 is arranged at the bottom of the first pipeline 08, and is used to transport the coolant from the hydraulic buffer 03 to the thermostat 04; the small circulation pipeline 10 is arranged at the top of the thermostat 04, and is used to transport the coolant from the thermostat 04 to the water pump 02; the large circulation pipeline 11 is arranged on one side of the thermostat 04, and is used to transport the coolant from the thermostat 04 to the cooling water tank 05; the third pipeline 12 is arranged on one side of the coolant, and is used to transport the coolant from the cooling water tank 05 to the water pump 02.

[0040] Optionally, the hydraulic buffer 03 is arranged outside the rear end side of the engine body cylinder head water jacket 01.

[0041] Optionally, the cooling water tank 05 is arranged outside the front end side of the engine body cylinder head water jacket 01.

[0042] In this embodiment, the thermostat 04 is arranged at the front end of the engine cylinder head water jacket 01, and the pipelines from the thermostat 04 to the water pump 02 and from the thermostat 04 to the cooling water tank 05 are greatly shortened, while simplifying the water pipes, reducing related parts and reducing costs. The thermostat 04 is arranged at the front end of the engine cylinder head water jacket 01, so that the thermostat 04 is arranged more compactly, improving the space utilization of the engine.

[0043] For example 2, please refer to Figures 1 to 3 After the coolant is slowed down by the hydraulic buffer 03, it flows into the thermostat 04. Thermostat 04 is a device for controlling the engine cooling system. It adjusts the flow of coolant by measuring the temperature of the coolant so that the engine works within the optimal temperature range.

[0044] The coolant flows from the outlet of the engine cylinder head through the first pipeline 08, through the hydraulic buffer 03, and then through the first pipeline 09 into the thermostat 04. The thermostat 04 is provided with a sensor for measuring the temperature of the coolant. When the coolant flows through the thermostat 04, the sensor measures the temperature of the coolant. The thermostat 04 is also provided with a first valve 13 and a second valve 14. The first valve 13 is connected to the small circulation pipeline 10, and the second valve 14 is connected to the large circulation pipeline 11. The thermostat 04 determines the valve to be opened by judging the measured temperature.

[0045] When the coolant flows through the thermostat 04, the sensor measures the temperature of the coolant. The thermostat 04 determines whether the water temperature meets the standard by the temperature measured by the sensor. If it meets the standard, the thermostat 04 closes the second valve 14 and opens the first valve 13, and the coolant flows into the water pump 02 through the small circulation pipeline 10; if it does not meet the standard, the thermostat 04 closes the first valve 13 and opens the second valve 14, and the coolant flows to the cooling water tank 05 through the large circulation pipeline 11 for cooling, and the cooled coolant flows to the water pump 02 through the third pipeline 12.

[0046] In this embodiment, the thermostat 04 automatically adjusts the flow direction of the coolant by judging the temperature of the coolant, thereby maintaining the engine operating within an optimal temperature range, avoiding overheating or overcooling of the generator, extending the life of the engine, and helping to improve the efficiency of the engine.

[0047] It should be noted that the above description of the disclosed embodiments enables professionals in the field to implement or use the present application. Various modifications to these embodiments will be apparent to professionals in the field, and the general principles defined herein may be implemented in other embodiments without departing from the scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An integrated cylinder head structure, characterized in that: include: Engine body cylinder head water jacket, water pump, hydraulic buffer, thermostat, cooling water tank, thermostat small circulation water outlet, thermostat large circulation water outlet, first pipeline, second pipeline, small circulation pipeline, large circulation pipeline and third pipeline; The thermostat is arranged in the water jacket cavity at one side of the front end of the water jacket of the cylinder head of the engine body; The water pump is arranged at the top of the front end of the water jacket of the cylinder head of the engine body; The engine body cylinder head water jacket is connected to the hydraulic buffer through the first pipeline; The hydraulic buffer is connected to the thermostat through the second pipeline; The small circulation water outlet of the thermostat is connected to the water pump through the small circulation pipeline; The large circulation water outlet of the thermostat is connected to the cooling water tank through the large circulation pipeline; The cooling water tank is connected to the water pump through the third pipeline.

2. The integrated cylinder head structure according to claim 1, characterized in that: The thermostat small circulation water outlet, the thermostat large circulation water outlet, the first pipeline, the second pipeline, the small circulation pipeline, the large circulation pipeline and the third pipeline are arranged outside the water jacket of the cylinder head of the engine body.

3. The integrated cylinder head structure according to claim 1, characterized in that: The hydraulic buffer is arranged outside the rear end side of the water jacket of the cylinder head of the engine body.

4. The integrated cylinder head structure according to claim 1, characterized in that: The cooling water tank is arranged outside the front end side of the cylinder head water jacket of the engine body.

5. The integrated cylinder head structure according to claim 1, characterized in that: A sensor is arranged inside the thermostat to measure the temperature of the coolant.

6. The integrated cylinder head structure according to claim 1, characterized in that: A first valve and a second valve are arranged inside the thermostat, wherein the first valve is connected to the small circulation pipeline, and the second valve is connected to the large circulation pipeline.

7. The integrated cylinder head structure according to claim 1, characterized in that: The coolant flows from the engine cylinder head through the first pipeline, passes through the hydraulic buffer, and then flows into the thermostat through the second pipeline. The thermostat determines whether the water temperature meets the standard through the sensor.

8. The integrated cylinder head structure according to claim 7, characterized in that: The thermostat determines whether the water temperature meets the standard through the sensor; If the standard is met, the thermostat opens the first valve, and the coolant flows to the water pump through the small circulation pipeline; If the standard is not met, the thermostat opens the second valve, and the coolant flows through the large circulation pipeline to the cooling water tank for cooling.

9. The integrated cylinder head structure according to any one of claims 7 or 8, characterized in that: The cooled coolant flows to the water pump through the third pipeline.

10. The integrated cylinder head structure according to any one of claims 1 to 9, characterized in that: A sealing gasket is provided at a connection portion between the outlet of the engine body cylinder head water jacket and the first pipeline.

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