CN217999715U - Engine and vehicle with same - Google Patents
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- CN217999715U CN217999715U CN202222146111.6U CN202222146111U CN217999715U CN 217999715 U CN217999715 U CN 217999715U CN 202222146111 U CN202222146111 U CN 202222146111U CN 217999715 U CN217999715 U CN 217999715U
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Abstract
The present disclosure discloses an engine and vehicle that has it, the engine includes: a cylinder block in which a combustion chamber is provided; a cylinder head connected with the cylinder block and closing the combustion chamber, the cylinder head being provided with a first surface facing the combustion chamber; a piston movably disposed within the cylinder block, an end of the piston being provided with a second surface facing the combustion chamber; a resilient member disposed on at least one of the first surface and the second surface, the resilient member adapted to adjust a volume of the combustion chamber as a pressure within the combustion chamber changes. The engine related to the disclosure has the advantages that the volume of the combustion chamber is adjustable, the knocking phenomenon in the working process of the engine can be reduced, the efficiency of the engine is improved, and the fuel consumption rate is improved.
Description
Technical Field
The disclosure relates to the technical field of vehicles, in particular to an engine and a vehicle with the same.
Background
HCCI engines (homogeneous charge compression ignition engines) inject a very uniform proportion of a mixture of air and gasoline into a cylinder, which is compressed by a piston to raise its temperature to a certain extent for self-combustion. Because the HCCI engine simultaneously performs compression ignition and heat release, the cylinder and the piston are subjected to a large pressure instantaneously, and the phenomenon of knocking is easily generated. The present application aims to provide an engine to solve the above problems.
SUMMERY OF THE UTILITY MODEL
The present disclosure is directed to solving at least one of the problems of the prior art. To this end, an object of the present disclosure is to propose an engine. The engine related to the disclosure has the advantages that the volume of the combustion chamber is adjustable, the knocking phenomenon in the working process of the engine can be reduced, the efficiency of the engine is improved, and the fuel consumption rate is improved.
The present disclosure also provides a vehicle having the engine.
According to some embodiments of the disclosure, the engine comprises: a cylinder block in which a combustion chamber is provided; a cylinder head connected with the cylinder block and closing the combustion chamber, the cylinder head being provided with a first surface facing the combustion chamber; a piston movably disposed within the cylinder block, an end of the piston being provided with a second surface facing the combustion chamber; a resilient member disposed on at least one of the first surface and the second surface, the resilient member adapted to adjust a volume of the combustion chamber as a pressure within the combustion chamber changes.
According to the engine, at least one of the first surface and the second surface is provided with the elastic piece, the pressure in the combustion chamber is gradually increased in the intake stroke of the engine, when the pressure is increased to a certain degree, the volume of the combustion chamber can be increased by compressing the elastic piece, and knocking caused by overlarge pressure in the combustion chamber is avoided; meanwhile, the compressed elastic part can store partial kinetic energy, and the kinetic energy is released when the engine is in an acting stroke, so that the working efficiency of the engine is further improved, lean burn is facilitated, and the fuel consumption rate is improved.
According to some embodiments of the disclosure, the elastic member is disposed on the second surface, and the engine further comprises: a piston cap connected to the resilient member and movably disposed within the combustion chamber to adjust a volume of the combustion chamber upon actuation of the resilient member.
According to some embodiments of the present disclosure, the piston cover is provided in a cylinder of the cylinder block, and a side of the piston cover facing the first surface of the cylinder head defines the combustion chamber with an inner peripheral wall of the cylinder and the first surface when the piston moves to a top dead center.
According to some embodiments of the disclosure, the resilient member is configured as a spring, the spring being deformable in a direction of movement of the piston.
According to some embodiments of the present disclosure, the spring is configured in plurality and spaced between the second surface and the piston cap.
According to some embodiments of the disclosure, the elastic member is disposed on the first surface, the engine further comprising: the upper combustion chamber cover is connected with the elastic piece and movably arranged in the combustion chamber so as to adjust the volume of the combustion chamber under the driving of the elastic piece.
According to some embodiments of the present disclosure, the elastic member includes a first elastic member attached to the first surface and a second elastic member attached to the second surface; the engine further includes: the combustion chamber upper cover is connected with the first elastic piece and movably arranged in the combustion chamber so as to adjust the volume of the combustion chamber under the driving of the first elastic piece; a piston cover connected with the second elastic member and movably disposed in the combustion chamber to adjust a volume of the combustion chamber under driving of the second elastic member.
According to some embodiments of the present disclosure, when the pressure in the combustion chamber reaches a preset pressure a, the combustion chamber upper cover compresses the first elastic member, and the piston cover compresses the second elastic member to increase the volume of the combustion chamber, the preset pressure a satisfying: a is more than or equal to 10bar and less than or equal to 18bar.
According to some embodiments of the present disclosure, a first stopper for limiting movement of the upper combustion chamber cover is disposed on the first surface; a second stop is disposed on the second surface for limiting movement of the piston cap.
According to some embodiments of the disclosure, the elastic member is connected with at least one of the first surface and the second surface by a bolt.
Additional aspects and advantages of the disclosure will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the disclosure.
Drawings
The above and/or additional aspects and advantages of the present disclosure will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic block diagram of an engine according to an embodiment of the present disclosure;
FIG. 2 is a schematic block diagram of an engine according to another embodiment of the present disclosure;
FIG. 3 is a schematic view of the piston and piston cap connection;
FIG. 4 is a schematic block diagram of an engine according to another embodiment of the present disclosure;
fig. 5 is a schematic structural view of an engine according to another embodiment of the present disclosure.
Reference numerals:
1000: an engine; 1100: a cylinder block; 1110: a combustion chamber; 1111: a combustion chamber upper cover; 1120: an inner peripheral wall; 1200: a cylinder head; 1210: a first surface; 1300: a piston; 1310: a second surface; 1400: an elastic member; 1410: a first elastic member; 1420: a second elastic member; 1500: a piston cap; 1600: a crankpin; 1700: a connecting rod; 1810: an air intake line; 1811: an intake valve; 1820: an exhaust line; 1821: an exhaust valve; 1921: mounting a buckle; 1922: and (6) a lower buckle.
Detailed Description
Reference will now be made in detail to the embodiments of the present disclosure, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of illustrating the present disclosure and should not be construed as limiting the same.
The combustion chamber volume of the existing engine is fixed, and for an HCCI engine, compression ignition and heat release are required at the same time, and a cylinder and a piston are subjected to great pressure at the moment, so that the pressure is released everywhere, and the engine is easy to knock.
An engine 1000 according to an embodiment of the present disclosure is described below with reference to fig. 1-5.
Referring to fig. 1, the engine 1000 includes, according to some embodiments of the present disclosure: cylinder block 1100, cylinder head 1200, piston 1300, and elastic member 1400.
Wherein, a combustion chamber 1110 is provided in the cylinder block 1100, the cylinder head 1200 is connected with the cylinder block 1100 and closes the combustion chamber 1110, the cylinder head 1200 is provided with a first surface 1210 facing the combustion chamber 1110, the piston 1300 is movably provided in the cylinder block 1100, an end of the piston 1300 is provided with a second surface 1310 facing the combustion chamber 1110, the elastic member 1400 is provided on at least one of the first surface 1210 and the second surface 1310, and the elastic member 1400 is adapted to adjust a volume of the combustion chamber 1110 when a pressure in the combustion chamber 1110 changes.
In the engine 1000 according to the present disclosure, at least one of the first surface 1210 and the second surface 1310 is provided with the elastic member 1400, the pressure in the combustion chamber 1110 gradually increases during the intake stroke of the engine 1000, and when the pressure increases to a certain extent, the volume of the combustion chamber 1110 can be increased by compressing the elastic member 1400, thereby preventing the knocking caused by the excessive pressure in the combustion chamber 1110; meanwhile, the compressed elastic member 1400 can store part of kinetic energy, and release the kinetic energy when the engine 1000 is in an acting stroke, so that the working efficiency of the engine 1000 is further improved, lean burn is facilitated, and the fuel consumption rate is improved.
According to some embodiments of the present disclosure, referring to fig. 1 and 2, when the elastic member 1400 is disposed on the second surface 1310, the engine 1000 may further include a piston cover 1500, the piston cover 1500 being connected with the elastic member 1400 and movably disposed in the combustion chamber 1110 to adjust the volume of the combustion chamber 1110 under the driving of the elastic member 1400. Specifically, when the engine 1000 is in an intake stroke, the piston 1300 moves from the top dead center to the bottom dead center, the volume above the piston 1300 is increased, the pressure is reduced, and the combustible gas formed by mixing gasoline and air is sucked into the cylinder; when the engine 1000 is in a compression stroke, the piston 1300 moves from a bottom dead center to a top dead center, the volume above the piston 1300 is reduced, and the combustible gas is compressed to increase the temperature and the pressure of the combustible gas, according to some embodiments of the present disclosure, when the pressure of the combustion chamber 1110 reaches 14bar, the piston cover 1500 can compress the elastic member 1400, so that the speed of the pressure increase in the cylinder is reduced, part of kinetic energy is stored in the elastic member 1400, and if knocking occurs in the compression stroke, the elastic member 1400 can absorb part of the impact; when the engine 1000 is in a working stroke, the combustible gas is combusted, the temperature and the pressure of the combustion gas are rapidly increased, the piston 1300 is pushed to move from the top dead center to the bottom dead center, and meanwhile, the elastic piece 1400 releases the stored kinetic energy, so that the working efficiency of the engine 1000 is improved. In addition, the existence of the elastic piece 1400 can further improve the compression ratio of the engine 1000, thereby being beneficial to lean combustion and improving the fuel efficiency.
According to some embodiments of the present disclosure, the piston cover 1500 is disposed in the cylinder of the cylinder block 1100, and the side of the piston cover 1500 facing the first surface 1210 of the cylinder head 1200 defines the combustion chamber 1110 with the inner circumferential wall 1120 and the first surface 1210 of the cylinder when the piston 1300 moves to the top dead center. That is, the combustion chamber 1110 in the present application is defined differently from the combustion chamber 1110 in the prior art, where the combustion chamber 1110 in the prior art refers to the combustion chamber 1110 between the piston 1300 and the cylinder head 1200 when the piston 1300 moves to the top dead center, and the combustion chamber 1110 in the present application refers to the combustion chamber 1110 in the space between the piston cover 1500, the inner circumferential wall 1120 of the cylinder, and the first surface 1210, i.e., the volume of the combustion chamber 1110 is constantly changing and not constant when the piston 1300 moves.
According to some embodiments of the present disclosure, the kind of the elastic member 1400 is not particularly limited, and for example, may be made of a material having a certain compression property and high temperature and high pressure resistance. According to some embodiments of the present disclosure, referring to fig. 1 to 3, the elastic member 1400 may be configured as a spring that is deformable in a moving direction of the piston 1300.
According to some embodiments of the present disclosure, when the elastic member 1400 is configured as a spring, the elastic member 1400 may be one body, i.e., the elastic member 1400 is composed of only one spring (refer to fig. 1 and 2). According to other embodiments of the present disclosure, the spring is configured to be plural and spaced between the second surface 1310 and the piston 1300 cover, i.e., the elastic member 1400 is composed of a plurality of independent springs (not shown). Therefore, the number of the springs can be designed according to the specific requirements of the engine 1000 so as to adjust the volume of the combustion chamber 1110, further reduce the knocking phenomenon in the working process of the engine 1000, improve the efficiency of the engine 1000 and improve the fuel consumption rate.
According to some embodiments of the present disclosure, referring to fig. 4, when the elastic member 1400 is disposed on the first surface 1210, in order to avoid the influence of high temperature and high pressure in the combustion chamber 1110 on the elastic member 1400, the engine 1000 may further include: and the combustion chamber upper cover 1111 is positioned between the cylinder head 1200 and the combustion chamber upper cover 1111, and the combustion chamber upper cover 1111 is connected with the elastic member 1400 and is movably arranged in the combustion chamber 1110 to adjust the volume of the combustion chamber 1110 under the driving of the elastic member 1400. Specifically, when the engine 1000 is in an intake stroke, the piston 1300 moves from the top dead center to the bottom dead center, the volume above the piston 1300 is increased, the pressure is reduced, and the combustible gas formed by mixing gasoline and air is sucked into the cylinder; when the engine 1000 is in a compression stroke, the piston 1300 moves from a bottom dead center to a top dead center, the volume above the piston 1300 is reduced, and combustible gas is compressed to increase the temperature and the pressure of the combustible gas, according to some embodiments of the present disclosure, when the pressure of the combustion chamber 1110 reaches 14bar, the combustion chamber upper cover 1111 can compress the elastic member 1400, so that the speed of the pressure increase in the cylinder is reduced, part of kinetic energy is stored in the elastic member 1400, and if knocking occurs in the compression stroke, the elastic member 1400 can absorb part of the impact; when the engine 1000 is in the working stroke, the combustible gas is combusted, the temperature and the pressure of the combustion gas are rapidly increased, the piston 1300 is pushed to move from the top dead center to the bottom dead center, and meanwhile, the elastic piece 1400 releases the stored kinetic energy, so that the working efficiency of the engine 1000 is improved. In addition, the existence of the elastic piece 1400 can further improve the compression ratio of the engine 1000, thereby being beneficial to lean combustion and improving the fuel efficiency.
According to some embodiments of the present disclosure, referring to fig. 5, the elastic member 1400 may further include a first elastic member 1410 and a second elastic member 1420, wherein the first elastic member 1410 is connected to the first surface 1210, and the second elastic member 1420 is connected to the second surface 1310. At this time, the engine 1000 further includes: a combustion chamber cover 1111 connected to the first elastic member 1410 and movably disposed in the combustion chamber 1110 to adjust the volume of the combustion chamber 1110 by the first elastic member 1410, and a piston cover 1500 connected to the second elastic member 1420 and movably disposed in the combustion chamber 1110 to adjust the volume of the combustion chamber 1110 by the second elastic member 1420. Specifically, when the engine 1000 is in an intake stroke, the piston 1300 moves from the top dead center to the bottom dead center, the volume above the piston 1300 is increased, the pressure is reduced, and the combustible gas formed by mixing gasoline and air is sucked into the cylinder; when the engine 1000 is in a compression stroke, the piston 1300 moves from a bottom dead center to a top dead center, the volume above the piston 1300 is reduced, and the combustible gas is compressed to increase the temperature and the pressure thereof, according to some embodiments of the present disclosure, when the pressure of the combustion chamber 1110 is increased to a certain extent, the combustion chamber upper cover 1111 compresses the first elastic member 1410, the piston cover 1500 compresses the second elastic member 1420 to increase the volume of the combustion chamber 1110, the speed of the increase in the pressure in the cylinder is slowed down, and part of kinetic energy is stored in the first elastic member 1410 and the second elastic member 1420, and if knocking occurs in the compression stroke, the first elastic member 1410 and the second elastic member 1420 can also absorb part of the impact; when the engine 1000 is in a power stroke, the combustible gas is combusted, the temperature and the pressure of the combustion gas are rapidly increased, the piston 1300 is pushed to move from the top dead center to the bottom dead center, and meanwhile, the first elastic piece 1410 and the second elastic piece 1420 release the stored kinetic energy, so that the working efficiency of the engine 1000 is improved. In addition, the presence of the first elastic member 1410 and the second elastic member 1420 can further increase the compression ratio of the engine 1000, thereby facilitating lean combustion and improving fuel efficiency.
According to some embodiments of the present disclosure, when the pressure in the combustion chamber 1110 reaches a preset pressure a, the combustion chamber upper cover 1111 compresses the first elastic member 1410, and the piston cover 1500 compresses the second elastic member 1420 to increase the volume of the combustion chamber 1110, the preset pressure a satisfies: a is more than or equal to 10bar and less than or equal to 18bar. If the preset pressure is too high or even close to the maximum pressure in the combustion chamber 1110, the elastic member 1400 is eventually compressed to a limited extent, which may reduce the effect of the elastic member 1400 on avoiding knocking; if the predetermined pressure is too low, i.e., the predetermined pressure is significantly different from the maximum pressure in the combustion chamber 1110, excessive compression may be caused to the resilient member 1400, which may shorten the service life of the resilient member 1400.
According to some embodiments of the present disclosure, a first stop (not shown) is disposed on the first surface 1210 for limiting the movement of the combustion chamber cover 1111, and a second stop (not shown) is disposed on the second surface 1310 for limiting the movement of the piston cover 1500. For example, when the pressure in the combustion chamber 1110 increases to a predetermined pressure, the combustion chamber upper cover 1111 compresses the first elastic member 1410, and the first stopper may prevent the combustion chamber upper cover 1111 from excessively compressing the first elastic member 1410; the piston cap 1500 compresses the second elastic member 1420, and the second limiting member prevents the piston cap 1500 from over compressing the second elastic member 1420, thereby extending the lifespan of the elastic member 1400 as a whole.
According to some embodiments of the present disclosure, the elastic member 1400 is coupled with at least one of the first surface 1210 and the second surface 1310 by a bolt. When the elastic member 1400 is damaged, it is convenient to repair and replace.
According to other embodiments of the present disclosure, referring to fig. 3, the elastic member 1400 may be further connected to at least one of the first surface 1210 and the second surface 1310 by a snap. For example, the piston cover 1500 has an upper latch 1921, the second surface 1310 of the piston 1300 is provided with a lower latch 1922, and the upper latch 1921 and the lower latch 1922 are connected, so that the latch can prevent the elastic member 1400 from being excessively compressed when the pressure is too high, thereby prolonging the service life of the elastic member 1400.
According to some specific embodiments of the present disclosure, referring to fig. 1 and 2, the engine 1000 further comprises a crank pin 1600 and a connecting rod 1700, the piston 1300 being connected to the connecting rod 1700 through the crank pin 1600.
According to some embodiments of the present disclosure, referring to fig. 1 and 2, the engine 1000 further comprises an intake conduit 1810 and an exhaust conduit 1820, the intake conduit 1810 having disposed thereon an intake valve 1811 to open or close the intake conduit 1810; exhaust line 1820 is provided with an exhaust valve 1821 to open or close exhaust line 1820.
In summary, the engine 1000 proposed by the present disclosure has the following advantages:
(1) The volume of the combustion chamber 1110 is adjustable, so that when the engine 1000 is in a compression stroke, the rapid increase of the pressure in the combustion chamber 1110 is avoided to cause deflagration;
(2) When the pressure of the combustion chamber 1110 reaches 14bar, the piston 1300 compresses the elastic member 1400, the elastic member 1400 can store part of kinetic energy, and when the engine 1000 is in a power stroke, the elastic member 1400 releases the stored energy, thereby improving the working efficiency of the engine 1000;
(3) If the engine 1000 knocks, the elastic member 1400 can absorb part of the impact, reducing the impact on the cylinder block 1100 to some extent;
(4) The number and position of the elastic members 1400 may be designed according to the specific situation of the engine 1000;
(5) The compression ratio of the engine 1000 is increased, which is beneficial to lean combustion and improves the fuel efficiency of the engine 1000.
The present disclosure also provides a vehicle including the engine 1000, and thus, all the features and advantages of the engine 1000 are provided, which are not described herein again. Overall, engine 1000 has at least the advantages of high efficiency, high fuel consumption, and less knock in engine 1000.
In the description herein, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present disclosure have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the disclosure, the scope of which is defined by the claims and their equivalents.
Claims (11)
1. An engine, comprising:
a cylinder block having a combustion chamber disposed therein;
a cylinder head connected with the cylinder block and closing the combustion chamber, the cylinder head being provided with a first surface facing the combustion chamber;
a piston movably disposed within the cylinder block, an end of the piston being provided with a second surface facing the combustion chamber;
a resilient member disposed on at least one of the first surface and the second surface, the resilient member adapted to adjust a volume of the combustion chamber as a pressure within the combustion chamber changes.
2. The engine of claim 1, wherein the resilient member is disposed on the second surface,
the engine further includes: a piston cap connected with the elastic member and movably disposed in the combustion chamber to adjust a volume of the combustion chamber under driving of the elastic member.
3. The engine according to claim 2, characterized in that the piston cover is provided in a cylinder of the cylinder block, and a side of the piston cover facing the first surface of the cylinder head defines the combustion chamber with an inner peripheral wall of the cylinder and the first surface when the piston moves to a top dead center.
4. An engine according to claim 3, characterized in that the resilient member is configured as a spring which is deformable in the direction of movement of the piston.
5. The engine of claim 4, wherein the spring is configured in plurality and spaced between the second surface and the piston cover.
6. The engine of claim 1, wherein the resilient member is disposed on the first surface,
the engine further includes: the combustion chamber upper cover is connected with the elastic piece and movably arranged in the combustion chamber so as to adjust the volume of the combustion chamber under the driving of the elastic piece.
7. The engine of claim 1, wherein the resilient member comprises a first resilient member attached to the first surface and a second resilient member attached to the second surface;
the engine further includes:
the combustion chamber upper cover is connected with the first elastic piece and movably arranged in the combustion chamber so as to adjust the volume of the combustion chamber under the driving of the first elastic piece;
a piston cover connected with the second elastic member and movably disposed in the combustion chamber to adjust a volume of the combustion chamber under driving of the second elastic member.
8. The engine according to claim 7, wherein the combustion chamber upper cover compresses the first elastic member and the piston cover compresses the second elastic member to increase the volume of the combustion chamber when the pressure in the combustion chamber reaches a preset pressure a that satisfies: a is more than or equal to 10bar and less than or equal to 18bar.
9. The engine of claim 7, characterized in that a first stop member for limiting the movement of the upper combustion chamber cover is provided on the first surface; a second stop is disposed on the second surface for limiting movement of the piston cap.
10. The engine of claim 1, wherein the resilient member is bolted to at least one of the first surface and the second surface.
11. A vehicle characterized by comprising the engine according to any one of claims 1 to 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222146111.6U CN217999715U (en) | 2022-08-15 | 2022-08-15 | Engine and vehicle with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222146111.6U CN217999715U (en) | 2022-08-15 | 2022-08-15 | Engine and vehicle with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217999715U true CN217999715U (en) | 2022-12-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222146111.6U Active CN217999715U (en) | 2022-08-15 | 2022-08-15 | Engine and vehicle with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217999715U (en) |
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2022
- 2022-08-15 CN CN202222146111.6U patent/CN217999715U/en active Active
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