CN107013296B

CN107013296B - Engine

Info

Publication number: CN107013296B
Application number: CN201610060230.6A
Authority: CN
Inventors: 王江涛; 李宇飞; 杨晓勇; 关松; 鲍春来; 高峰; 胡广进; 申荣伟; 张士伟; 王雪敏
Original assignee: Great Wall Motor Co Ltd
Current assignee: Great Wall Motor Co Ltd
Priority date: 2016-01-28
Filing date: 2016-01-28
Publication date: 2020-07-03
Anticipated expiration: 2036-01-28
Also published as: CN107013296A

Abstract

The present invention provides an engine, comprising: the cylinder cover is provided with a cylinder cover water jacket; the cylinder body is provided with a cylinder body water jacket, and at least one part of the cylinder body water jacket is communicated with the cylinder cover water jacket; the water outlet end of the radiator is connected with the water inlet end of the cylinder water jacket, and the water inlet end of the oil cooler is connected with the water inlet end of the cylinder water jacket; a control valve having a first inlet and first through third outlets. The temperature of the engine and the engine oil can be adjusted according to different working conditions, so that the engine and the engine oil are at proper working temperature, the performance of the engine is improved at least to a certain extent, and the energy consumption of the engine is reduced.

Description

Engine

Technical Field

The invention relates to the technical field of vehicles, in particular to an engine.

Background

The development trend of the current engine is miniaturization to realize low oil consumption and low emission of the vehicle. The engine is matched with miniaturization technologies such as a supercharger and direct injection, and then high thermal load and mechanical load are carried along with the engine. In addition, in actual operation, the working condition of the engine is complex, and the thermal fatigue of the engine material is also aggravated. Therefore, it is necessary to perfect the heat management system and adjust the circulating water quantity according to the working condition.

At present, a conventional engine cooling system mainly controls whether the engine is in large circulation or not by arranging a thermostat, and the method has poor circulating water quantity regulation precision and can not realize regulation according to requirements. Thermal management techniques such as split cooling, double water jacket, static dead water techniques, etc. have been proposed recently, but these techniques are limited to specific operating conditions of the engine, i.e. to improve the cooling cycle of the engine under certain operating conditions.

Disclosure of Invention

In view of this, the present invention is directed to an engine, which can adjust the temperatures of the engine and the engine oil according to different working conditions, so that the engine and the engine oil are at suitable working temperatures, thereby improving the performance of the engine at least to a certain extent and reducing the energy consumption of the engine.

In order to achieve the purpose, the technical scheme of the invention is realized as follows:

an engine, comprising: the cylinder cover is provided with a cylinder cover water jacket; the cylinder body is provided with a cylinder body water jacket, and at least one part of the cylinder body water jacket is communicated with the cylinder cover water jacket; the water outlet end of the radiator is connected with the water inlet end of the cylinder water jacket, and the water inlet end of the oil cooler is connected with the water inlet end of the cylinder water jacket; the control valve is provided with a first inlet and first to third outlets, the first inlet is connected with a water outlet end of the cylinder cover water jacket and a water outlet end of the oil cooler, the first outlet is connected with a water inlet end of the oil cooler, the second outlet is connected with a water inlet end of the cylinder body water jacket, the third outlet is connected with a water inlet end of the radiator, and the first inlet is selectively communicated with at least one of the first to third outlets.

Further, the control valve further includes: a second inlet; the cylinder block water jacket includes: the cylinder body water jacket body and the cylinder body water distribution channel, the cylinder body water distribution channel with the cylinder cover water jacket links to each other, the end of intaking of cylinder body water jacket body with the end of intaking of cylinder body water distribution channel with the play water end of radiator links to each other, the play water end of cylinder body water distribution channel with first import links to each other, the play water end of cylinder body water jacket body with the second import links to each other, the second import sets up into at least one intercommunication in optionally with first to third export.

Further, the control valve includes a housing and a valve element having a first communicating portion and a second communicating portion communicating with each other, the valve element being movably provided in the housing in an axial direction of the valve element.

Further, the valve spool has a first axial position, and the first inlet port communicates with the first outlet port when the valve spool is in the first axial position.

Further, the valve spool has a second axial position, and the first inlet communicates with the second outlet when the valve spool is in the second axial position.

Further, the valve core has a third axial position, and when the valve core is at the third axial position, the first inlet and the second inlet are respectively communicated with the second outlet.

Further, the valve spool has a fourth axial position, and when the valve spool is in the fourth axial position, both the first inlet and the second inlet communicate with the second outlet and the third outlet.

Further, the valve spool has a fifth axial position, and when the valve spool is in the fifth axial position, the first inlet and the second inlet are respectively communicated with the third outlet.

Further, an end of the first communicating portion adjacent to the second inlet is configured as a pointed structure.

Further, the oil cooler includes: the transmission oil cooler and the engine oil cooler are arranged in parallel.

Compared with the prior art, the invention has the following advantages:

the temperature of the engine and the engine oil can be adjusted according to different working conditions, so that the engine and the engine oil are at proper working temperature, the performance of the engine is improved at least to a certain extent, and the energy consumption of the engine is reduced.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic illustration of an embodiment of an engine according to an embodiment of the present disclosure;

FIG. 2 is a schematic illustration of a spool of the control valve according to an embodiment of the present invention in a first axial position;

FIG. 3 is a schematic view of a valve cartridge according to an embodiment of the present invention;

FIG. 4 is a schematic illustration of a spool of the control valve of the present embodiment in a second axial position;

FIG. 5 is a schematic illustration of a spool of the control valve according to an embodiment of the present invention in a third axial position;

FIG. 6 is a schematic illustration of a spool of the control valve according to an embodiment of the present invention in a fourth axial position;

FIG. 7 is a schematic illustration of a spool of the control valve according to an embodiment of the present invention in a fifth axial position;

FIG. 8 is a schematic illustration of another embodiment of an engine according to an embodiment of the present invention.

Description of reference numerals:

100-the engine is adopted, and the engine,

110-cylinder cover, 111-cylinder cover water jacket,

120-cylinder body, 121-cylinder body water jacket body, 122-cylinder body water distribution channel,

130-a heat sink, the heat sink,

140-oil cooler, gearbox oil cooler 141, engine oil cooler 142,

150-a warm-air device, wherein,

160-control valve, 161-first inlet, 162-first outlet, 163-second outlet, 164-third outlet, 165-second inlet, 166-housing, 167-valve core, 167 a-first communication portion, 167 b-second communication portion,

170-a first water pump, 180-a second water pump,

190 a-a first one-way valve, 190 b-a second one-way valve.

Detailed Description

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

The specific disadvantages of the prior art are as follows:

1) the circulating water quantity of the engine cannot be linearly regulated, namely, the temperature control has errors;

2) the working condition of the engine is complex, the circulating water amount required by different cooling parts of the engine is completely different under different working conditions, the normal operation of the engine under the highest performance is only ensured by the conventional engine heat management, and the other working conditions are not subjected to detailed control;

3) in order to realize quick warm-up of the engine, a set of control structure can be added theoretically, and further the cost is increased. However, the technical effect is limited, and only a certain specific working condition of the engine can be improved;

4) the cold starting performance is poor, and the emission is high;

5) the warming time is long, and the oil consumption is high;

6) the supply of warm air is slow, and the driving comfort of passengers is poor;

7) theoretically, the low load and high temperature are the optimal temperature control of the engine, and the conventional engine cannot realize the optimal temperature control.

To this end, the present invention proposes an engine 100, which engine 100 can improve the above-mentioned problems of the prior art engines at least to some extent.

The engine 100 of the present invention will be described in detail with reference to fig. 1 to 8 in conjunction with an embodiment.

The engine 100 according to an embodiment of the present invention may include a cylinder head 110, a cylinder block 120, a radiator 130, an oil cooler 140, a heater device 150, and a control valve 160.

As shown in fig. 1, a cylinder head water jacket 111 is provided on the cylinder head 110, a cylinder block water jacket is provided on the cylinder block 120, and at least a part of the cylinder block water jacket communicates with the cylinder head water jacket 111. That is, at least a portion of the coolant flowing through the block water jacket may flow into the head water jacket 111.

The cylinder cover water jacket 111 can cool the cylinder cover 110, the cylinder body water jacket can cool the cylinder body 120, and the cylinder cover water jacket 111 and the cylinder body water jacket can prevent various adverse phenomena of the engine 100 caused by overheating of the engine 100, so that the engine 100 and engine oil are at proper working temperature.

The water outlet end of the radiator 130 and the water outlet end of the air heater 150 are respectively connected with the water inlet end of the cylinder water jacket, the water inlet end of the oil cooler 140 is connected with the water outlet end of the air heater 150, that is, the water inlet end of the oil cooler 140 is also connected with the water inlet end of the cylinder water jacket. The low-temperature cooling liquid from the radiator 130 can enter the cylinder water jacket, and the low-temperature cooling liquid from the radiator 130 can also enter the oil cooler to cool the oil.

The control valve 160 has a first inlet 161, a first outlet 162, a second outlet 163, and a third outlet 164, wherein the first inlet 161 is connected to a water outlet end of the head water jacket 111 and a water outlet end of the oil cooler 140, the first outlet 162 is connected to a water inlet end of the oil cooler 140, the second outlet 163 is connected to a water inlet end of the air heater 150, the third outlet 164 is connected to a water inlet end of the radiator 130, and the first inlet 161 is provided to be selectively communicated with at least one of the first outlet 162, the second outlet 163, and the third outlet 164.

That is, the coolant having a relatively high temperature flowing out of the head jacket 111 may be introduced into the control valve 160 through the first inlet 161, and may be selectively introduced into at least one of the heater unit 150, the oil cooler 140, and the radiator 130 under the control of the control valve 160.

The amount of coolant flowing out of cylinder head water jacket 111 into oil cooler 140, cylinder block water jacket, and radiator 130 may be controlled by the system to adjust the temperature of engine 100 and oil so that engine 100 and oil are maintained in a suitable working environment, and the flow direction and amount of coolant may be adjusted according to the operating condition of engine 100 (e.g., cold start, warm-up, part load, or full load).

Note that the above-described "at least a part of the block water jacket" means: the cylinder body water jacket can be the same as the cylinder body water jacket in the prior art, and is completely connected with the cylinder cover water jacket 111, namely, the cooling liquid sequentially flows through the cylinder body water jacket and the cylinder cover water jacket 111; or at least two parts, and one part of the two parts is connected with the cylinder head water jacket 111.

As shown in fig. 8, when the block water jacket is identical to the cylinder head water jacket of the prior art, and is all connected to cylinder head water jacket 111, engine 100 may include the following operating conditions:

the working condition I is as follows: the first inlet 161 and the first outlet 162 communicate

In this condition, since the first inlet 161 is not communicated with the second outlet 163 and the third outlet 164, the coolant in the cylinder water jacket and the cylinder head water jacket 111 is in a dead water state, and does not flow and circulate, so that the temperature of the coolant in the cylinder water jacket and the cylinder head water jacket 111 can be rapidly increased.

Working conditions are as follows: the first inlet 161 and the second outlet 163 are communicated

In this condition, the block jacket, the head jacket 111, and the control valve 160 form a cycle in which the temperature of the coolant in the block jacket and the head jacket 111 is still in an elevated state, and the coolant may be passed through the oil cooler 140 to heat the oil if necessary.

Working conditions are as follows: first inlet 161 communicates with second outlet 163 and third outlet 164

In this condition, a portion of the coolant passing through the block water jacket and the head water jacket 111 enters the radiator 130, and another portion returns directly to the block water jacket, thereby ensuring that the temperatures of the block 120 and the head 110 are not too high.

Working conditions are as follows: the first inlet 161 and the third outlet 164 are in communication

In this condition, all the coolant passing through the block water jacket and the head water jacket 111 enters the radiator 130 to dissipate heat, and the low-temperature coolant flowing out of the radiator 130 returns to the block water jacket and the head water jacket 111 to cool the block 120 and the head 111.

According to the engine 100 of the embodiment of the invention, the control valve 160 is arranged, so that the coolant can be effectively controlled to selectively flow into one or more of the radiator 130, the oil cooler 140 and the cylinder water jacket, and further, the flow direction and the flow rate of the coolant can be adjusted according to the working condition of the engine 100, and the engine 100 and the oil are ensured to be at the proper working temperature.

In some embodiments of the present invention, as shown in fig. 1 to 2 and 4 to 7, the control valve 160 further includes a second inlet 165, the cylinder water jacket includes a cylinder water jacket body 121 and a cylinder water distribution passage 122, a water inlet end of the cylinder water jacket body 121 and a water inlet end of the cylinder water distribution passage 122 are connected to a water outlet end of the radiator 130, the water outlet end of the cylinder water distribution passage 122 is connected to the first inlet 161, the water outlet end of the cylinder water jacket body 121 is connected to the second inlet 165, and the second inlet 165 is selectively placed in communication with at least one of the first outlet 162, the second outlet 163, and the third outlet 164.

That is, the cooling water path in the cylinder 120 has two paths, one is the cylinder water distribution path 122 and the other is the cylinder water jacket body 121, the cylinder water distribution path 122 and the cylinder water jacket body 121 are arranged in parallel, and the low-temperature coolant discharged from the radiator 130 can simultaneously enter the cylinder water distribution path 122 and the cylinder water jacket.

It should be noted that the cylinder jacket 121 mainly functions to cool the cylinder 120, and the cylinder water distribution passage 122 mainly functions to introduce the coolant directly into the cylinder head water jacket 111.

Since the second inlet 165 is selectively connected to at least one of the first outlet 162, the second outlet 163 and the third outlet 164, the high-temperature coolant in the block water jacket body 121 can directly enter the radiator 130 through the second inlet 165 and the third outlet 164, so that the temperature of the coolant is rapidly lowered, and the temperature of the engine 100 and the oil is prevented from being excessively high.

Specifically, as shown in fig. 2, 4 to 7, the control valve 160 includes a housing 166 and a valve spool 167, the valve spool 167 has a first communicating portion 167a and a second communicating portion 167b communicating with each other, and the valve spool 167 is provided in the housing 166 movably in the axial direction of the valve spool 167. By controlling the movement of the spool 167, the first inlet 161 may be selectively communicated with at least one of the first outlet 162, the second outlet 163, and the third outlet 164, and the second inlet 165 may be selectively communicated with at least one of the first outlet 162, the second outlet 163, and the third outlet 164.

First, as shown in fig. 1, the oil cooler 140 of the present invention includes an oil cooler 141 of a transmission case machine and an engine oil cooler 142 arranged in parallel. A heater unit 150 may be further provided between the second outlet 163 and the oil cooler 140.

The operation of the control valve 160 of the present invention will be described in detail with reference to specific embodiments.

Cold start conditions:

as shown in fig. 2, in this operating condition, the temperature of the engine 100 and the oil is low, and it is required to quickly raise the engine 100 to a proper temperature, so that the spool 167 is at the first axial position, and when the spool 167 is at the first axial position, the first inlet 161 is communicated with the first outlet 162, while the first inlet 161 is not communicated with the second outlet 163 and the third outlet 164, and the second inlet 165 is not communicated with any one of the first outlet 162, the second outlet 163 and the third outlet 164.

Therefore, the water in the cylinder head water jacket 111 and the water in the cylinder block water jacket are both in a non-circulating state, and the temperature of the coolant in the cylinder head water jacket 111 and the coolant in the cylinder block water jacket can be rapidly increased, which facilitates rapid temperature rise of the engine 100.

In some embodiments of the present invention, a first water pump 170 may be disposed between the first outlet 162 and the inlet of the oil cooler 140, the first water pump 170 operates to circulate water between the control valve 160 and the oil cooler 140 in a first cycle, and since the water outlet end of the oil cooler 140 is connected to the first inlet 161 and the water outlet end of the head water jacket 111, the coolant in the first cycle may absorb heat from the coolant in the head water jacket 111, raise the temperature of the oil, and ensure that the oil is heated to a proper temperature quickly.

Preferably, as shown in fig. 1, a first check valve 190a is arranged between the oil cooler 140 and the water inlet end of the cylinder water jacket to ensure that the coolant in the first circulation does not enter the cylinder water jacket. It will be appreciated that the first one-way valve 190a is not disposed between the radiator 130 and the water inlet end of the block jacket.

And (3) warming-up working condition:

the warm-up condition comprises a first warm-up condition and a second warm-up condition, the valve core 167 is located at the second position under the first warm-up condition, and the valve core 167 is located at the third position under the second warm-up condition.

As shown in fig. 4, when the spool 167 is in the second position, the first inlet 161 and the second outlet 163 communicate, and the first inlet 161 does not communicate with the first outlet 162 and the third outlet 164, and the second inlet 165 does not communicate with any of the first outlet 162, the second outlet 163, and the third outlet 164. At this time, water in the block water jacket body 121 on the block 120 still does not flow, ensuring that the temperature of the engine 100 can be rapidly increased. A second water pump 180 may be disposed between the heater unit 150 and the water inlet end of the head water jacket 111, and the second water pump 180 may operate such that a second circulation is formed among the head water jacket 111, the control valve 160, the heater unit 150, and the block water distribution passage 122, but the coolant in the radiator 130 does not enter the second circulation.

It will be appreciated that the second water pump 180 may be disposed between the radiator 130 and the water inlet end of the block jacket at the same time.

Since the second water pump 180 is operated, a third circulation is formed between the control valve 160 and the oil cooler 140 and the heater unit 150, thereby further increasing the temperature of the oil.

As shown in fig. 5, when the valve spool 167 is at the third position, the first inlet 161 and the second outlet 163 are communicated, and a small portion of the second inlet 165 is communicated with the second outlet 163, whereby a small portion of the coolant in the block water jacket body 121 can flow into the second circulation, increasing the temperature of the oil in the oil cooler 140, and at least to some extent, preventing the temperature of the coolant in the block water jacket body 121 from being excessively high.

As shown in fig. 3, in order to ensure that only a small portion of the second inlet 165 communicates with the second outlet 163 when the valve spool 167 is at the second position, one end of the first communicating portion 167a close to the second outlet 163 may be provided with a sharp-angled structure. Thereby, the amount of coolant in the block water jacket body 121 entering into the control valve 160 can be effectively limited.

Partial load condition:

as shown in fig. 6, in this condition, the temperature of engine 100 and oil is high enough to require proper temperature reduction of engine 100 and oil. The valve spool 167 thus has a fourth axial position in which the valve spool 167 is in the fourth axial position with the first and

second inlet ports

161, 165 communicating with the second and

third outlet ports

163, 164, respectively.

At this time, the radiator 130 may participate in the coolant circulation system, and the low-temperature coolant may cool the engine 100 and the engine oil. A part of the coolant flowing through the block water jacket (the coolant flowing through the block water jacket body 121 and the coolant flowing through the block water distribution passage 122 and the head water jacket 111) may enter the radiator 130 to radiate heat, but another part thereof may not pass through the radiator 130, but directly return to the water inlet end of the block water jacket through the second outlet 163 and the heater 150.

The block water jacket body 121, the radiator 130, and the second water pump 180 form a fourth cycle that mainly functions to lower the temperature of the engine 100. At this time, the coolant in the fourth cycle may also enter the third cycle to cool the oil in the oil cooler 140.

Full load working condition:

as shown in fig. 7, in this operating condition, the engine 100 is in full load operation, the temperature of the engine and the engine oil is high, and the temperature of the engine 100 and the engine oil needs to be reduced to avoid undesirable phenomena. At full load, the spool is in a fifth axial position, where the first and

second inlets

161, 165 are in communication with the third outlet 164, respectively.

Therefore, all the cooling liquid flowing through the cylinder water jacket, the cylinder head water jacket 111 and the oil cooler 140 can pass through the radiator 130, and then the low-temperature cooling liquid coming out of the radiator 130 can cool the engine 100 and the oil, so that the temperature of the engine 100 and the oil is prevented from being too high.

Preferably, a second check valve 190b may be provided between the first water pump 170 and the water inlet of the oil cooler 140.

In summary, the temperature of the engine 100 and the engine oil can be adjusted according to different working conditions by the engine 100 of the present invention, so that the engine 100 and the engine oil are at a suitable working temperature, and further, the performance of the engine 100 is improved at least to a certain extent, and the energy consumption of the engine 100 is reduced.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. An engine (100), comprising:

the cylinder cover (110), wherein a cylinder cover water jacket (111) is arranged on the cylinder cover (110);

the cylinder body (120) is provided with a cylinder body water jacket, and at least one part of the cylinder body water jacket is communicated with the cylinder cover water jacket (111);

the water outlet end of the radiator (130) is connected with the water inlet end of the cylinder water jacket, and the water inlet end of the oil cooler (140) is connected with the water inlet end of the cylinder water jacket;

a control valve having a first inlet (161), a first outlet (162), a second outlet (163), and a third outlet (164), the first inlet (161) being connected to the water outlet of the head jacket (111) and the water outlet of the oil cooler (140), the first outlet (162) being connected to the water inlet of the oil cooler (140), the second outlet (163) being connected to the water inlet of the block jacket, the third outlet (164) being connected to the water inlet of the radiator (130), the first inlet (161) being configured to selectively communicate with at least one of the first outlet (162), the second outlet (163), and the third outlet (164);

the control valve further includes: a second inlet (165); the cylinder block water jacket includes: cylinder body water jacket body (121) and cylinder body water distribution way (122), cylinder body water distribution way (122) with cylinder cap water jacket (111) link to each other, the end of intaking of cylinder body water jacket body (121) with the end of intaking of cylinder body water distribution way (122) with the play water end of radiator (130) links to each other, the play water end of cylinder body water distribution way (122) with first import (161) link to each other, the play water end of cylinder body water jacket body (121) with second import (165) link to each other, second import (165) set up into at least one intercommunication in selective and first export (162), second export (163) and third export (164).

2. The engine (100) according to claim 1, characterized in that the control valve includes a housing (166) and a spool (167), the spool (167) having a first communicating portion (167a) and a second communicating portion (167b) communicating with each other, the spool (167) being disposed movably in an axial direction of the spool (167) within the housing (166).

3. The engine (100) of claim 2, characterized in that the spool (167) has a first axial position, the first inlet (161) being in communication with the first outlet (162) when the spool (167) is in the first axial position.

4. The engine (100) of claim 2, characterized in that the spool (167) has a second axial position, the first inlet (161) being in communication with the second outlet (163) when the spool (167) is in the second axial position.

5. The engine (100) of claim 2, characterized in that the valve spool (167) has a third axial position, and the first inlet (161) and the second inlet (165) communicate with the second outlet (163), respectively, when the valve spool (167) is in the third axial position.

6. The engine (100) of claim 2, wherein the spool (167) has a fourth axial position, and when the spool (167) is in the fourth axial position, the first inlet (161) and the second inlet (165) are both in communication with the second outlet (163) and the third outlet (164).

7. The engine (100) of claim 2, characterized in that the spool (167) has a fifth axial position, and the first inlet (161) and the second inlet (165) communicate with the third outlet (164), respectively, when the spool (167) is in the fifth axial position.

8. The engine (100) according to claim 2, wherein an end of the first communicating portion (167a) near the second inlet (165) is configured as a pointed structure.

9. The engine (100) of any of claims 1-8, wherein the oil cooler (140) comprises: and a transmission oil cooler (141) and an engine oil cooler (142) which are arranged in parallel.