CN107664075B

CN107664075B - Engine assembly and vehicle with same

Info

Publication number: CN107664075B
Application number: CN201610603612.9A
Authority: CN
Inventors: 杨晓勇; 王江涛; 高峰; 李宇飞; 胡广进; 申荣伟; 张士伟
Original assignee: Great Wall Motor Co Ltd
Current assignee: Great Wall Motor Co Ltd
Priority date: 2016-07-28
Filing date: 2016-07-28
Publication date: 2020-03-31
Anticipated expiration: 2036-07-28
Also published as: CN107664075A

Abstract

The invention provides an engine assembly and a vehicle with the same, wherein the engine assembly comprises: the engine body comprises an air cylinder body, wherein a main oil duct of the air cylinder body is formed in the air cylinder body; the oil storage device is connected with the main oil duct of the cylinder block and is used for outputting lubricating oil into the main oil duct of the cylinder block; the on-off device is arranged to communicate or separate the oil storage device and the cylinder main oil gallery. The engine assembly provided by the invention can realize rapid establishment of an oil film during cold start of the engine, and reduce friction during cold start and frequent start of the engine, thereby prolonging the service life of parts of the engine.

Description

Engine assembly and vehicle with same

Technical Field

The invention relates to the technical field of vehicles, in particular to a vehicle with an engine assembly.

Background

With increasingly strict fuel consumption and emission regulations, traditional gasoline and diesel engines are facing more and more challenges, and new energy power is rising further. Hybrid power is one of the technical directions of new energy power, an intelligent starting and stopping function is one of the basic functions of a hybrid power engine, the idling time of the engine is reduced through frequent starting and stopping so as to reduce the oil consumption of the engine, and under the working condition of urban areas, the friction of parts such as a crankshaft connecting rod and the like is large due to frequent starting and stopping, the power loss of the engine is large, and meanwhile the service lives of the parts are reduced.

Disclosure of Invention

In view of the above, the present invention is directed to an engine assembly, so that an oil film can be rapidly established when an engine is cold started, friction of the engine during cold start can be reduced, and the service life of engine components can be prolonged.

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

an engine assembly, comprising: an engine body including a cylinder block having a cylinder block main oil gallery formed therein; the oil storage device is connected with the main oil duct of the cylinder block and is used for outputting lubricating oil into the main oil duct of the cylinder block; and the on-off device is arranged to be used for communicating or separating the oil storage device and the main oil gallery of the cylinder body.

According to some embodiments of the present invention, a piston is disposed in the oil reservoir, and the piston is configured to drive the lubricating oil in the oil reservoir to flow to the cylinder block main oil gallery by using a pressure difference between two sides of the piston.

Furthermore, one side surface of the piston is in contact with lubricating oil, the other side surface of the piston is communicated with a circulating water path, the inlet end of the circulating water path is from the oil cooler, and the outlet end of the circulating water path is output to the warm air electronic auxiliary water pump.

Further, a water outlet end of the warm air electronic auxiliary water pump is connected with the oil cooler to provide heating liquid for heating oil for the oil cooler, and the heating liquid flows through the oil cooler and is output to the other side face of the piston from the oil cooler.

Further, at least one part of the other side surface of the piston is a curved surface or an inclined surface, and the curved surface or the inclined surface at least partially extends into the circulating waterway.

According to some embodiments of the present invention, a through hole is opened in a side wall of the cylinder block, and the through hole is used for communicating the oil reservoir with the cylinder block main oil gallery.

According to some embodiments of the invention, the engine assembly further comprises a heating device for heating the oil reservoir.

According to some embodiments of the invention, an insulating layer is further disposed on an outer surface of the oil storage device.

According to some embodiments of the invention, a piston is disposed within the oil reservoir, the piston being driven by a motor.

Compared with the prior art, the engine assembly has the following advantages:

(1) the engine assembly provided by the invention can realize rapid establishment of an oil film during cold start of the engine, and reduce friction during cold start of the engine, thereby prolonging the service life of parts of the engine.

(2) The heating device can reduce the viscosity of lubricating oil during cold start, quickly establish an oil film and improve the efficiency of an engine.

Another object of the present invention is to propose a vehicle having an engine assembly as described above.

The vehicle and the engine assembly have the same advantages compared with the prior art, and the detailed description is omitted.

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 engine assembly according to an embodiment of the present disclosure;

fig. 2 is a schematic view of an oil storage device according to an embodiment of the present invention.

Description of reference numerals:

100-engine component, 1-cylinder body, 2-oil storage device, 3-on-off device, 4-cylinder cover, 5-warm air,

6-warm air electronic auxiliary water pump, 7-water pump, 8-engine oil cooler, 9-piston and 10-pipeline.

Detailed Description

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

The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

As shown in fig. 1 to 2, an engine assembly 100 according to an embodiment of the present invention may include an engine body, an oil storage device 2, and an on-off device 3.

The engine body comprises an engine body 1, wherein a cylinder cover 4 is arranged at the upper end of the engine body 1, an oil pan is arranged at the lower end of the engine body, the oil pan is used as a shell of an oil storage tank and can prevent impurities from entering, lubricating oil flowing back from each friction surface of the engine is collected and stored, partial heat is dissipated, and the lubricating oil is prevented from being oxidized. A cylinder block main oil gallery for supplying lubricating oil to each of the kinematic pairs of the engine body is formed in the cylinder block 1.

The oil storage device 2 is connected with the main oil gallery of the cylinder block, and the oil storage device 2 is used for outputting lubricating oil into the main oil gallery of the cylinder block. It will be appreciated that the reservoir 2 only operates during start-up phases, such as cold starts or frequent starts, and that the oil pump is the main oil supply after the lubricating oil pressure in the engine has been established, i.e. during start-up phases the reservoir 2 assists the oil pump.

The on-off device 3 is provided for communicating or blocking the oil storage device 2 with the cylinder block main oil gallery.

That is, the oil storage device 2 and the cylinder main oil gallery can be communicated or opened and closed through the on-off device 3, when the engine is started, the on-off device 3 is opened, lubricating oil in the oil storage device 2 enters the cylinder main oil gallery, and then parts such as a crankshaft, a connecting rod and the like of a kinematic pair are lubricated through the cylinder main oil gallery, so that friction between the crankshaft and the connecting rod during starting can be reduced, when the engine is in a normal operation or a stop state, the on-off device 3 is closed, and the oil storage device 2 is filled with the lubricating oil, so that the engine can be used when the engine is started again.

As an implementation mode, the cylinder body 1 can be also provided with a piston, a piston ring, a crankshaft, a connecting rod and other parts, wherein the piston is of a cylindrical structure and adopts a metal part and can move up and down in the cylinder, the piston ring is positioned between the outer edge of the piston and the inner wall surface of the cylinder and plays a role in sliding sealing, and the piston ring can be arranged to prevent fuel, air mixture and waste gas in a combustion chamber from leaking into an oil groove during compression and combustion and prevent oil in the oil groove from leaking into a combustion area and then combusting or losing.

The crankshaft serves to convert the up-and-down linear motion of the piston into a rotational motion, and the connecting rod serves to connect the piston to the crankshaft, and particularly, the connecting rod may include a rod portion pivotally connected to the crankshaft and a head portion pivotally connected to the piston so as to change an angle while the piston moves and the crankshaft rotates.

The lubrication system is one of the important subsystems in the engine, and can ensure that all moving parts in the engine can be lubricated so as to realize light running. The lubricating process of the automobile engine comprises the following steps: the engine sends the lubricating oil in the oil pan into the oil collector through the oil pump, and then enter the oil filter to remove the impurity in the oil, realize the clean filtration of oil, the oil that filters flows into the cylinder block main oil gallery after the oil cooler 8 cools, sprays to the movement spare parts such as bent axle, connecting rod to lubricate it under high pressure, the oil that flows back from each friction surface can flow into the oil pan again at the same time, is collected together in the oil pan in order to recycle.

Further, the basic construction and operation of other engine components and parts are well known to those skilled in the art and will not be described in detail herein.

In some embodiments, as shown in fig. 2, a piston 9 is disposed in the oil storage device 2, and the piston 9 is configured to drive the lubricating oil in the oil storage device 2 to flow to the cylinder main oil gallery by using a pressure difference between two sides of the piston 9, and preferably, a through hole may be formed in a side wall of the cylinder block 1, and the through hole is used for communicating the oil storage device 2 with the cylinder main oil gallery, so as to realize the circulation of the lubricating oil between the oil storage device 2 and the main oil gallery.

Specifically, as shown in fig. 1 and 2, when the engine is started, there is no oil pressure in the cylinder main oil gallery, the on-off device 3 is opened, and water in the circulating water path can push the piston 9 to move towards the on-off device 3, so that the lubricating oil in the oil storage device 2 enters the cylinder main oil gallery, the crankshaft and the connecting rod are lubricated, the friction degree is reduced, and the service life is prolonged.

When the engine normally runs, the oil pump normally pumps oil, so that oil pressure is established, the oil pressure in the main oil passage of the cylinder body can reach 5-6bar which is larger than the pressure (1-2bar) of water in the circulating water passage, so that the piston 9 is pushed to move rightwards, lubricating oil in the main oil passage enters the oil storage device 2, and when the lubricating oil in the oil storage device 2 is full, the on-off device 3 is closed, so that the oil storage device 2 works when being started next time.

As an embodiment, as shown in fig. 2, one side surface of the piston 9 is a flat surface (left side surface in fig. 2) and contacts with the lubricating oil, and at least a portion of the other side surface (right side surface in fig. 2) is a curved surface or an inclined surface, preferably, a lower portion of the other side surface of the piston 9 may be a flat surface and the lower flat surface may be flush with the left side wall of the duct 10, and an upper portion of the other side surface of the piston 9 may be the above-mentioned curved surface or inclined surface, so that an arc-shaped water flow impact surface is formed, which facilitates the water path to push the piston 9 to move faster.

Preferably, the curved surface or the inclined surface at least partially extends into the circulating water channel and is communicated with the circulating water channel, the inlet end of the circulating water channel is from the oil cooler 8, and the outlet end of the circulating water channel is output to the warm air electronic auxiliary water pump 6, so that the oil cooler 8 can be simultaneously heated through the circulating water channel, and the cooling speed of the lubricating oil is reduced. Meanwhile, the temperature of the water from the oil cooler 8 is relatively high, so that the water temperature can be transferred to the lubricating oil through the piston, the lubricating oil is heated, the viscosity of the lubricating oil is reduced, and the lubricating effect is improved.

Further, the water outlet end of the warm air electronic auxiliary water pump 6 is connected with the oil cooler 8 to provide the oil cooler 8 with a heating liquid for heating the oil, and the heating liquid is output from the oil cooler 8 to the other side surface of the piston 9 after flowing through the oil cooler 8. In other words, taking the cold start of the engine as an example, the temperature of the lubricating oil in the oil pump is low and the viscosity is high during the cold start of the engine, and at this time, the engine oil needs to be preheated, so that the establishment of an oil film between each kinematic pair of the engine is facilitated. At this time, because the water outlet end of the warm air electronic auxiliary water pump 6 is connected with the engine oil cooler 8, the liquid with relatively high temperature in the loop, such as water (the water comes from a cylinder cover and has relatively high temperature), is used for heating the liquid, so that the temperature of the oil can be quickly increased. This part of the liquid flows through a separate line to the other side of the piston 9.

It will be understood that the temperature of the oil increases gradually after the oil cooler 8 has worked, and that the oil needs to be cooled down, the circuit for cooling down the oil being the same as the prior art, for example by means of a cooling liquid coming from the water jacket of the cylinder block, which is different from the above-mentioned heating circuit and is preferably independent of each other, without interfering with each other.

Like this, through heating the machine oil to oil cooler 8 for the engine can heat machine oil fast when cold start or frequent start, reduces the viscosity of machine oil, makes and can establish lubricating oil film fast between the kinematic pair in the engine, reduces wearing and tearing.

The piston 9 described in the above embodiment performs oil supply and oil return by a pressure difference between both sides of the piston 9, but the present invention is not limited thereto. For example, in other embodiments, the piston 9 in the oil storage device 2 can also be directly driven by the motor, and both sides of the piston 9 can be flat, thereby saving the manufacturing time and cost of the piston 9.

In the embodiment, when the engine is started, the on-off device 3 is opened, the motor drives the piston 9 to move leftwards, lubricating oil in the oil storage device 2 is pushed into the main oil duct of the cylinder block, when the engine runs normally or is stopped, the motor drives the piston 9 to move rightwards, and the lubricating oil in the main oil duct enters the oil storage device 2 to be recycled, so that the arrangement of a circulating water path is omitted, and the production cost is reduced.

As a preferred embodiment, the engine assembly 100 may further include a heating device for heating the oil reservoir 2, thereby reducing the viscosity of the lubricating oil and achieving a high flow rate, so that an oil film can be rapidly established at the time of engine start.

Advantageously, the outer surface of the oil storage device 2 can be further provided with a heat insulation layer, optionally, the heat insulation layer can be an air heat insulation layer, or a layer of heat insulation material is coated around the outer side of the oil storage device 2, so that the heat insulation effect is good, and the oil temperature of the engine can be ensured to reach the intelligent starting and stopping condition.

Preferably, the on-off device 3 may be a solenoid valve, whereby control is convenient.

As shown in fig. 1, the engine assembly 100 according to the embodiment of the present invention is further provided with a cooling system and a heat-retaining system.

The cooling system is mainly used for dissipating heat in the cylinder block 1 into air to prevent the engine from overheating, and the liquid cooling mode mainly realizes cooling by circulating liquid in a pipeline 10 and a passage in the engine, as shown in fig. 1, after the water pump 7 conveys the liquid to the engine cylinder block, the liquid can flow in a cooling water jacket around the cylinder to absorb heat, so that the temperature of the engine is reduced. When the thermostat is closed, the liquid flowing through the engine directly flows back to the water pump 7 through the pipeline 10 around the thermostat, and when the thermostat is opened, the liquid flows to the radiator firstly, so that the heat in the liquid is dissipated into the air through the radiator and then flows back to the water pump 7.

The heat preservation system is an independent circulating system, as shown in fig. 1, the upper part of the cylinder cover 4 is provided with warm air 5 and a warm air electronic auxiliary water pump 6, and the warm air 5 can be controlled by a button switch or an electronic control, mainly plays a role in quickly heating the engine and can keep constant temperature. Specifically, in the case of low temperature, the outlet of the radiator is completely blocked, the coolant from the warm air electronic auxiliary water pump 6 directly circulates again through the engine without passing through the radiator, and when the temperature of the coolant is too high, the outlet of the radiator is opened, and the coolant flows through the radiator to dissipate heat and then flows back to the water pump 7 through the engine pipe 10.

The operation of the engine assembly 100 according to the embodiment of the present invention is described in detail below with reference to fig. 1-2:

when the engine is started, no oil pressure exists in the cylinder main oil duct, the on-off device 3 is opened, and water in the circulating water path can push the piston 9 to move leftwards, so that lubricating oil in the oil storage device 2 enters the cylinder main oil duct, and a crankshaft and a connecting rod are lubricated.

When the engine runs normally, the oil pump pumps oil normally, the oil pressure in the main oil gallery of the cylinder block is greater than the pressure of water in the circulating water path, so that the piston 9 is pushed to move rightwards, lubricating oil in the main oil gallery enters the oil storage device 2, and when the lubricating oil in the oil storage device 2 is full, the on-off device 3 is closed, so that the oil storage device 2 works when being started next time.

When the engine is stopped, the on-off device 3 is in a closed state, the piston 9 is positioned at the rightmost end of the oil storage device 2, and meanwhile, the oil storage device 2 is filled with lubricating oil, so that the engine can be conveniently used when the engine is restarted.

Under the urban working condition, when the engine frequently starts and stops, the oil temperature in the oil storage device 2 is higher, the viscosity is small, the mobility is good, the on-off device 3 is opened, and the oil storage device 2 assists the oil pan to provide lubricating oil for moving parts, so that the light and fast operation of moving parts under the intelligent starting and stopping condition can be met.

In short, according to the engine assembly 100 of the embodiment of the invention, the oil storage device 2, the on-off device 3 and the circulating water path are utilized, so that the oil film can be quickly established when the engine is in cold start, the friction of the crankshaft connecting rod when the engine is in cold start is reduced, and the service life of engine parts is prolonged.

The invention further provides a vehicle which comprises the engine assembly 100, so that the problem of friction of the crankshaft connecting rod during intelligent start and stop can be effectively solved.

The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An engine assembly (100), comprising:

the engine comprises an engine body, a main oil passage and a main oil passage, wherein the engine body comprises a cylinder body (1), and the cylinder body (1) is internally provided with a cylinder body main oil passage;

the oil storage device (2) is connected with the main oil duct of the cylinder block, the oil storage device (2) is used for outputting lubricating oil into the main oil duct of the cylinder block, a piston (9) is arranged in the oil storage device (2), the piston (9) is arranged to drive the lubricating oil in the oil storage device (2) to flow to the main oil duct of the cylinder block by utilizing the pressure difference between two side surfaces of the piston (9), one side surface of the piston (9) is in contact with the lubricating oil, the other side surface of the piston is communicated with a circulating water path, the inlet end of the circulating water path is from an engine oil cooler (8) and the outlet end of the circulating water path is output to a warm air electronic auxiliary water pump (6), the outlet end of the warm air electronic auxiliary water pump (6) is connected with the engine oil cooler (8) to provide heated liquid for heating the engine oil for the engine oil cooler (8), the heated liquid flows through the oil cooler (8) and is output from the oil cooler (8) to the other side face of the piston (9); and

the oil storage device comprises an on-off device (3), and the on-off device (3) is used for communicating or separating the oil storage device (2) and the cylinder body main oil gallery.

2. The engine assembly (100) according to claim 1, characterized in that at least a portion of the other side of the piston (9) is curved or beveled, said curved or beveled extending at least partially into the circulation waterway.

3. The engine assembly (100) according to claim 1, wherein a through hole is opened in a side wall of the cylinder block (1) for communicating the oil reservoir (2) and the block main oil gallery.

4. The engine assembly (100) of claim 1, further comprising: a heating device for heating the oil storage device (2).

5. The engine assembly (100) according to claim 1, characterized in that an insulating layer is further arranged on the outer surface of the oil storage device (2).

6. The engine assembly (100) according to claim 1, characterized in that a piston (9) is arranged in the oil reservoir (2), the piston (9) being driven by an electric motor.

7. A vehicle, characterized in that an engine assembly (100) according to any one of claims 1-6 is provided.