Waterway connected engine

Abstract

The utility model discloses an engine with waterway connection, which relates to the technical field of engines, and comprises a cylinder body, a large circulation waterway part and a small circulation water and land part, a three-way water pipe and a crankcase are arranged between the large circulation waterway part and the small circulation waterway part, the large circulation waterway part is connected with an oil cooler, and the oil cooler is connected with the crankcase. The large-circulation waterway part and the small-circulation land and water part are embedded in the surface of the tank body. The large circulation water path part and the small circulation water path part are synchronously connected through the three-way water pipe, when the engine is in the state that preheating is needed when the engine is just started, the thermostat closes an oil cooler water pipe in the large circulation water path and is only connected with a small circulation water pipe in the small circulation water path, and heat loss of the engine is reduced; when the engine is in a state that heat dissipation is needed in normal operation, the thermostat closes the small circulating water pipe in the small circulating water path and is only connected with the oil cooler water pipe in the large circulating water path, the heat dissipation efficiency of cooling liquid is improved, and normal operation of the engine is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of engines, in particular to an engine connected with a waterway. Background Art

[0002] A motorcycle engine is a machine that ignites the fuel mixture that enters the cylinder and converts the heat energy generated by its combustion into mechanical energy, and the crankshaft transmits the power to the rear wheel of the motorcycle through a transmission mechanism to convert it into the driving power of the vehicle. Since the temperature of the engine is low when it is just started, which affects the working performance, it needs to be heated up. During normal operation, a large amount of heat is generated, which needs to be dissipated and cooled. For this purpose, a circulating water circuit needs to be set on the surface of the engine cylinder to cool the engine by circulating water and land. The circulating water circuit in the engine is divided into two, one of which is responsible for heating the engine during pre-starting, and the other is responsible for heat dissipation during normal operation of the engine. However, the structure of the circulating water circuit set on the surface of the existing engine is relatively complex and cannot play a better role in heating and cooling, so there is an urgent need for an engine with a circulating water circuit of a new structure.

[0003] Chinese patent document CN117231344A discloses "a motorcycle engine". It includes a box body and a cylinder body fixed on the top of the box body, an oil cooler is installed on the front side wall of the box body, and a thermostat is installed on the front side wall of the cylinder body. It is characterized in that an oil filter is also installed on the front side wall of the box body, the oil cooler is located below the thermostat, and the oil filter is located on one side of the oil cooler. A water inlet channel and a water outlet channel are provided in the box body, and the upper ends of the water inlet channel and the water outlet channel are both connected to the thermostat, the lower end of the water inlet channel is connected to the water inlet of the oil cooler, and the lower end of the water outlet channel is connected to the water outlet of the oil cooler. An oil inlet channel is also provided in the box body, and one end of the oil inlet channel is connected to the oil filter, and the other end is connected to the oil inlet of the oil cooler. However, the water-land structure of the engine in this invention is relatively complex, and the auxiliary effect on the engine is relatively general. Summary of the invention

[0004] The utility model mainly solves the technical problems of the original engine water circuit structure being complicated and the poor temperature rise and fall effect, and provides a water circuit connected engine, wherein a large circulation water circuit part and a small circulation water circuit part are arranged on the surface of the engine cylinder body, and both circulation water circuits are connected with a three-way water pipe and a crankcase, and the corresponding circulation water circuit is closed according to the temperature rise and fall requirements of the engine to meet the temperature requirements of the engine. The large circulation water circuit and the small circulation water circuit are both embedded in the surface of the engine cylinder body and connected by a three-way water pipe, which simplifies the structural complexity of the water circuit arrangement and reduces the production cost.

[0005] The above technical problems of the utility model are mainly solved by the following technical solutions: the utility model includes a cylinder body and a large circulation water circuit part and a small circulation water and land part, a three-way water pipe and a crankcase are arranged between the large circulation water circuit part and the small circulation water circuit part, the large circulation water circuit part is connected to the oil cooler, and the large circulation water circuit part and the small circulation water and land part are embedded in the surface of the cylinder body.

[0006] Preferably, the large circulation water circuit portion includes two sections of oil cooler water pipes, an oil cooler is provided between the two sections of oil cooler water pipes, and the oil cooler water pipe is connected to the crankcase through the oil cooler.

[0007] Preferably, the small circulation water circuit portion includes a small circulation water pipe, and the small circulation water pipe is respectively connected to the three-way water pipe and the crankcase.

[0008] Preferably, the three-way water pipe connects the oil cooler water pipe, the engine water outlet cover and the engine water channel, and the three-way water pipe is provided with a three-way channel opening, including an upward water pipe, a downward water pipe and a horizontal water pipe, and the tubular diameter of the connected part of the three-way channel opening is smaller than the tubular diameter of the three-way channel opening.

[0009] Preferably, the engine water outlet cover is arranged above the engine water channel, and a tubular opening is provided on the engine water outlet cover, and the opening extends obliquely upward.

[0010] Preferably, a thermostat is provided in the crankcase, an opening is provided above the crankcase, the opening is connected to a thermostat cover, holes are provided at the lower end of the thermostat cover and one side of the opening, and fasteners are provided in the holes.

[0011] Preferably, a water pump assembly is provided on one side of the crankcase, and the water pump assembly is arranged on the edge of the engine cylinder block.

[0012] Preferably, the engine water channel is arranged on the cylinder body, is in the shape of an elongated strip on the surface of the cylinder body and protrudes outward, and the engine water channel transversely runs through the entire engine cross section.

[0013] Preferably, the engine water outlet cover and the thermostat cover are connected to a radiator, a tubular connecting port is provided at the upper end of the thermostat cover, and the radiator is connected to the opening and the connecting port.

[0014] Preferably, the oil cooler is arranged on the bottom end surface of the cylinder body, and external connection ports are provided on both sides of the oil cooler, and the external connection ports are connected to the water pipes of the oil cooler.

[0015] The beneficial effects of the utility model are as follows: the utility model synchronously connects the large circulation water circuit part and the small circulation water circuit part through a three-way water pipe. According to the actual working requirements of the actual engine, when the engine is in a state of just starting and needs to be preheated, the thermostat closes the oil cooler water pipe in the large circulation water circuit and only connects the small circulation water pipe in the small circulation water circuit, thereby reducing the length of the coolant circulation path, reducing the heat loss of the engine, and accelerating the preheating and starting of the engine; when the engine is in a state of normal operation and needs heat dissipation, the thermostat closes the small circulation water pipe in the small circulation water circuit and only connects the oil cooler water pipe in the large circulation water circuit, and the coolant flows through the oil cooler. The length increases, and the coolant heat dissipation efficiency is improved, ensuring the normal operation of the engine. At the same time, the entire water circuit in this application is embedded and welded on the surface of the box, and the overall structure is simple, which greatly reduces the installation cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is an overall structural diagram of an engine connected with a waterway according to the utility model.

[0017] Figure 2 It is a structural diagram of a water channel connection part of an engine of the utility model.

[0018] Figure 3 The utility model is a structural diagram of a three-way water pipe.

[0019] Figure 4 It is a structural diagram of a thermostat part of the utility model.

[0020] In the figure, 1. engine water outlet cover, 2. three-way water pipe, 2.1 upward water pipe, 2.2 horizontal water pipe, 2.3 downward water pipe, 3. oil cooler, 4. oil cooler water pipe, 5. small circulation water pipe, 6. water pump assembly, 7. crankcase, 8. thermostat cover, 9. engine water channel. DETAILED DESCRIPTION

[0021] The technical solution of the utility model is further specifically described below through embodiments and in conjunction with the accompanying drawings.

[0022] Embodiment 1: This embodiment is an engine connected by a water circuit. The engine is divided into two states during operation. When the engine is just started, the temperature of various parts of the engine is low. At this time, the temperature of the entire engine needs to be quickly increased to reduce heat loss and improve fuel utilization. When the engine is in normal operation, the movement frequency of various engine parts is high and the heat output is large. At this time, the engine needs to be cooled to prevent the engine from overheating and affecting the normal operation of the parts. Most of the existing methods solve the heat change demand during engine operation by setting up a dual-circulation water circuit, but the existing water circuit circulation structure is relatively complex and cannot achieve effective heat control effects. In this embodiment, the two circulating water circuit parts are synchronously connected by a three-way water pipe 2, which simplifies the complexity of the entire water and land parts. Figures 1 to 4 As shown, two engine water channels 9 and an oil cooler 3 are provided on the surface of the engine cylinder body. The two engine water channels 9 are arranged in parallel up and down and horizontally penetrate the entire engine surface, and the outer contour of the engine water channel 9 protrudes outward on the cylinder body surface. An engine water outlet cover 1 is provided above the left end of the engine water channel 9. The engine water outlet cover 1 includes a base and a tubular opening, the center of the base is connected with the tubular opening, and the tubular opening is arranged above the base and inclined to the upper left. The engine water outlet cover 1 is connected to the radiator outlet through the tubular opening. The center of the base is connected to the three-way water pipe 2, and the three-way water pipe 2 includes channel water pipes in three directions, namely, up, down and horizontal. The upward water pipe 2.1 is connected to the engine water outlet cover 1 and communicates with the engine water channel 9, the horizontal water pipe 2.2 is connected to one side of the small circulation water pipe 5, and the downward water pipe 2.3 is connected to the oil cooler water pipe 4. The diameter of the common connection part of the channel water pipes in the three directions is smaller than the diameter of the water pipes in the three directions.

[0023] The small circulation water pipe 5 is directly connected to the crankcase 7, and the oil cooler water pipe 4 is divided into two sections. The three-way water pipe 2 is connected to one end of the first section of the oil cooler water pipe 4, and the other end of the first section of the oil cooler 3 water pipe is connected to one end of the oil cooler 3. The other end of the oil cooler 3 is connected to the thermostat 8 cover on the left side of the top. An opening is provided above the crankcase 7, and the thermostat 8 is arranged in the crankcase 7. The bottom end of the thermostat 8 cover is connected to the thermostat 8 through the opening. The lower edge of the thermostat 8 cover and the same side of the opening are both provided with holes. The thermostat 8 cover is fixed to the top of the crankcase 7 by installing fasteners in the holes. A tubular connection port is provided on the right side of the top of the thermostat 8 cover, and the radiator water outlet is connected to the thermostat 8. A water pump assembly 6 is provided on the right side of the crankcase 7, that is, the edge of the engine cylinder body, and the water pump assembly 6 is connected to the thermostat 8.

[0024] When the engine is in the cold start state, the water pump assembly 6 operates as a power source to drive the coolant in the engine water channel 9 to circulate the cylinder body. In this state, the temperature of the engine cylinder body and each working component is relatively low. At this time, it is necessary to quickly increase the temperature of the engine cylinder body and each component, preheat the engine temperature, and improve the combustion efficiency. The thermostat 8 closes the connection between the thermostat 8 cover and the crankcase 7, that is, the channel opening in the direction of the oil cooler water pipe 4, and only opens the channel opening in the direction of the small circulation water pipe 5. The coolant engine water outlet cover 1 flows through the transverse water pipe 2.2 of the three-way water pipe 2 and then flows horizontally into the small circulation water pipe 5 and finally reaches the crankcase 7, realizing the small circulation water circulation. During the circulation process of this path, the coolant flows through a shorter path, and the engine heat taken away during the flow process is less, which can reduce the heat loss of the engine during cold start and promote the rapid start of the engine.

[0025] When the engine is in normal operation after preheating, the engine components will emit a lot of heat when working normally. At this time, it is necessary to dissipate the excess heat of the engine cylinder and related components, control the engine cylinder and related components within a suitable temperature range, and avoid engine overheating damage. The thermostat 8 closes the small circulation water circuit when the cold engine is started, that is, closes the channel port connecting the small circulation water pipe 5 and the crankcase 7, and opens the connection port between the thermostat 8 cover and the crankcase 7. Under the power guidance of the water pump assembly 6, a part of the coolant flows from the radiator outlet through the thermostat 8 cover to the crankcase 7. The other part of the coolant enters the three-way water pipe 2 from the radiator outlet through the engine water outlet cover 1 and the engine water channel 9, and flows downward at the descending water pipe 2.3 of the three-way water pipe 2 through the oil cooler 3 water pipe and the oil cooler 3, and finally enters the crankcase 7 through the thermostat 8 cover. The coolant completes the large circulation water circuit during the above circulation process, and covers the entire engine cylinder and related components as much as possible through the water circuit circulation, thereby improving the heat dissipation efficiency. In this embodiment, a notch adapted to the water circulation water pipe is provided on the surface of the engine cylinder body, and the water pipe in the water circulation is directly welded to the surface of the cylinder body, which reduces the difficulty of installing the water pipe and the number of water pipe support parts, thereby reducing the manufacturing cost. At the same time, in this embodiment, the three-way water pipe 2 is used as a common connection point to connect the large circulation water circuit and the small circulation water circuit, thereby simplifying the layout complexity of the water circulation, improving the utilization efficiency of the water circulation, reducing the required length of the water pipe, and saving the manufacturing cost of the water circuit.

[0026] Embodiment 2: In this embodiment, the engine cylinder structure is similar to that of embodiment 1. However, if only the channel at the end of the water circuit is closed by the thermostat 8, and no restriction is performed at the three-way water pipe 2, part of the coolant will still flow into the wrong water circuit at the three-way water pipe 2, reducing the circulation efficiency of the coolant in the circulating water circuit. Figure 1 and Figure 2As shown, two engine water channels 9 and an oil cooler 3 are provided on the surface of the engine cylinder body. The two engine water channels 9 are arranged in parallel up and down and horizontally penetrate the entire engine surface, and the outer contour of the engine water channel 9 protrudes outward on the cylinder body surface. An engine water outlet cover 1 is provided above the left end of the engine water channel 9. The engine water outlet cover 1 includes a base and a tubular opening, the center of the base is connected with the tubular opening, and the tubular opening is arranged above the base and inclined to the upper left. The engine water outlet cover 1 is connected to the radiator outlet through the tubular opening. The center of the base is connected to the three-way water pipe 2, and the three-way water pipe 2 includes channel water pipes in three directions, namely, up, down and horizontal. The upward water pipe 2.1 is connected to the engine water outlet cover 1 and communicates with the engine water channel 9, the horizontal water pipe 2.2 is connected to one side of the small circulation water pipe 5, and the downward water pipe 2.3 is connected to the oil cooler water pipe 4. The diameter of the common connection part of the channel water pipes in the three directions is smaller than the diameter of the water pipes in the three directions. Different from the embodiment 1, in this embodiment, a direction switch gate is added to the three-way water pipe 2 to judge the diversion of the small circulation water circuit and the large circulation water circuit. The small circulation water pipe 5 is directly connected to the crankcase 7, and the oil cooler 3 water pipe is divided into two sections. The three-way water pipe 2 is connected to one end of the first section of the oil cooler water pipe 4, and the other end of the first section of the oil cooler water pipe 4 is connected to one end of the oil cooler 3. The other end of the oil cooler 3 is connected to the thermostat 8 cover on the left side of the top through the second section of the oil cooler water pipe 4. An opening is provided above the crankcase 7, and the thermostat 8 is arranged in the crankcase 7. The bottom end of the thermostat 8 cover is connected to the thermostat 8 through the opening. The lower edge of the thermostat 8 cover and the same side of the opening are both provided with holes, and the thermostat 8 cover is fixed on the top of the crankcase 7 by installing fasteners in the holes. A tubular connection port is provided on the right side of the top of the thermostat 8 cover, and the radiator water outlet is connected to the thermostat 8. A water pump assembly 6 is arranged on the right side of the crankcase 7 , namely, the edge of the engine cylinder body. The water pump assembly 6 is connected to a thermostat 8 .

[0027] When the engine is in the cold start state, the water pump assembly 6 operates as a power source to drive the coolant in the engine water channel 9 to circulate the cylinder body. In this state, the temperature of the engine cylinder body and each working component is relatively low. At this time, it is necessary to quickly increase the temperature of the engine cylinder body and each component, preheat the engine temperature, and improve the combustion efficiency. The thermostat 8 closes the connection between the thermostat 8 cover and the crankcase 7, that is, the channel opening in the direction of the oil cooler water pipe 4, and only opens the channel opening in the direction of the small circulation water pipe 5. At the same time, the direction switch gate in the three-way water pipe 2 synchronously closes the channel opening of the horizontal water pipe 2.2 in the three-way water pipe 2. In Example 1, although the thermostat 8 closes the channel in the direction of the oil cooler water pipe 4, the three-way water pipe 2 is not limited, and a part of the coolant will still flow downward from the three-way water pipe 2 until it stops flowing before the channel opening closed by the thermostat 8. The remaining coolant can only reach the crankcase 7 from the small circulation water pipe 5, so that part of the coolant cannot achieve the original effect. In this embodiment, a flow limit is simultaneously made at the three-way water pipe 2, so that the coolant engine water outlet cover 1 flows through the three-way water pipe 2 and only flows horizontally into the small circulation water pipe 5 and finally reaches the crankcase 7, thereby realizing the circulation of the small circulation water path. In the process of the circulation of the coolant in this path, the coolant flows through a shorter path, and the engine heat taken away during the flow process is less, which can reduce the heat loss of the engine when the cold engine is started, and promote the engine to start faster.

[0028] When the engine is in normal operation after preheating, the engine components will emit a lot of heat when working normally. At this time, it is necessary to dissipate the excess heat of the engine cylinder and related components, control the engine cylinder and related components within a suitable temperature range, and avoid engine overheating and damage. The thermostat 8 closes the small circulation water circuit when the cold engine is started, that is, closes the channel port connecting the small circulation water pipe 5 and the crankcase 7, and opens the connection port between the thermostat 8 cover and the crankcase 7. At the same time, the three-way water pipe 2 synchronously closes the circulation channel port of the horizontal water pipe 2.2 and opens the circulation channel port of the downward water pipe 2.3, so that the coolant cannot flow into the small circulation water pipe 5 horizontally. In Example 1, although the thermostat 8 closes the channel in the direction of the small circulating water pipe 5, the three-way water pipe 2 does not limit the flow, and a part of the coolant will still flow horizontally from the three-way water pipe 2 until it stops flowing before the channel mouth closed by the thermostat 8. The remaining coolant can only reach the crankcase 7 from the small circulating water pipe 5, so that part of the coolant cannot play the original cooling effect, resulting in a low cooling efficiency of the circulating water circuit for the engine cylinder. After the redundant flow channel is closed at the three-way water pipe 2, the coolant flows through the thermostat 8 cover to the crankcase 7 under the power guidance of the water pump assembly 6. The other part of the coolant enters the three-way water pipe 2 from the radiator outlet through the engine outlet cover 1 and from the engine water channel 9, and flows downward at the three-way water pipe 2 through the oil cooler water pipe 4 and the oil cooler 3, and finally enters the crankcase 7 through the thermostat 8 cover. The coolant completes a large circulation water circuit during the circulation process, reducing the loss of the coolant flowing into the small circulation water pipe 5. The water circuit circulates to cover the entire engine cylinder block and related components as much as possible, thereby improving the heat dissipation efficiency.

[0029] In this embodiment, the engine water channel 9 is directly opened in the box, and no additional water pipe is required, which avoids the pulling, cracking, breaking, aging, etc. of the water pipe due to interference during use, thereby improving the reliability of use. At the same time, the thermostat 8 and the oil cooler 3 are all installed on the front side of the engine cylinder body. During the driving of the vehicle, the airflow can act positively and cool down the cylinder body. The front side of the cylinder body is cooled by the airflow. The engine water channel 9 opened on the box body can also directly exchange heat with the box body, cool down the cooling water, and improve the cooling effect on the engine oil. At the same time, in this embodiment, in addition to selectively closing the channel opening at the end of the circulating waterway through the thermostat 8, the three-way water pipe 2 at the starting end of the waterway is selectively closed in direction, ensuring that the coolant enters the correct circulating waterway from the beginning of the waterway, improving the circulation efficiency of the coolant, and reducing the possibility of the coolant flowing into the wrong waterway when circulating in a small circulating waterway or a large circulating waterway, thereby achieving an efficient temperature control effect of the waterway circulation on the engine cylinder body.

Claims

1. A water-connected engine, characterized in that: It includes a cylinder body, a large circulation water circuit part and a small circulation water and land part. A three-way water pipe and a crankcase are arranged between the large circulation water circuit part and the small circulation water circuit part. The large circulation water circuit part is connected to an oil cooler. The large circulation water circuit part and the small circulation water and land part are embedded in the surface of the cylinder body.

2. The water-connected engine according to claim 1, characterized in that: The large circulation water circuit part includes two sections of oil cooler water pipes, an oil cooler is arranged between the two sections of oil cooler water pipes, and the oil cooler water pipe is connected to the crankcase through the oil cooler.

3. An engine connected by waterway according to any one of claims 1 or 2, characterized in that: The small circulation water circuit part comprises a small circulation water pipe, and the small circulation water pipe is respectively connected to the three-way water pipe and the crankcase.

4. The water-connected engine according to claim 1, characterized in that: The three-way water pipe connects the oil cooler water pipe, the engine water outlet cover and the engine water channel. The three-way water pipe is provided with a three-way channel opening, including an upward water pipe, a downward water pipe and a horizontal water pipe. The tubular diameter of the connected part of the three-way channel opening is smaller than the tubular diameter of the three-way channel opening.

5. The water-connected engine according to claim 4, characterized in that: The engine water outlet cover is arranged above the engine water channel, and a tubular opening is arranged on the engine water outlet cover, and the opening extends upwardly in an inclined manner.

6. The water-connected engine according to claim 5, characterized in that: A thermostat is arranged in the crankcase, an opening is arranged above the crankcase, the opening is connected to a thermostat cover, a hole is arranged at the lower end of the thermostat cover and one side of the opening, and a fastener is arranged in the hole.

7. The water-connected engine according to claim 1, characterized in that: A water pump assembly is provided on one side of the crankcase, and the water pump assembly is arranged on the edge of the engine cylinder body.

8. The water-connected engine according to claim 4, characterized in that: The engine water channel is arranged on the cylinder body, is in the shape of a long strip on the surface of the cylinder body and protrudes outwards, and the engine water channel runs through the entire engine cross section horizontally.

9. The water-connected engine according to claim 6, characterized in that: The engine water outlet cover and the thermostat cover are connected with a radiator, the upper end of the thermostat cover is provided with a tubular connecting port, and the radiator is connected with the opening and the connecting port.

10. The water-connected engine according to claim 2, characterized in that: The oil cooler is arranged on the bottom end surface of the cylinder body, and external connection ports are arranged on both sides of the oil cooler, and the external connection ports are connected to the water pipes of the oil cooler.

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