WO2015096266A1

WO2015096266A1 - Hydraulic transmission engine and hydraulically-driven automobile

Info

Publication number: WO2015096266A1
Application number: PCT/CN2014/071364
Authority: WO
Inventors: 童云
Original assignee: 童云
Priority date: 2013-12-24
Filing date: 2014-01-24
Publication date: 2015-07-02
Also published as: CN103644027A

Abstract

Disclosed are a hydraulic transmission engine and a hydraulically-driven automobile, wherein the hydraulic transmission engine comprises a combustion chamber, a piston, and a liquid storage tank, with a protruding end of the piston being within a hydraulic cylinder arranged to be abutted with the combustion chamber; and further comprises a high-pressure liquid conveying pipeline, a normal-pressure liquid returning pipeline, and a hydraulic motor. A liquid inlet and a liquid outlet are also arranged on the side wall of the hydraulic cylinder, one end of the high-pressure liquid conveying pipeline being in communication with the liquid outlet, the other end being in communication with the hydraulic motor, one end of the normal-pressure liquid returning pipeline being in communication with the liquid inlet, and the other end being in communication with the liquid storage tank. The hydraulic transmission motor and the hydraulically-driven automobile provided in the present invention have the advantages of a simple conversion process, a low loss, and an easy change of kinetic energy direction.

Description

TECHNICAL FIELD The present invention relates to the field of generator manufacturing technologies, and in particular, to a hydraulic transmission engine and a hydraulically driven automobile. BACKGROUND OF THE INVENTION In the development of human society, with the maturity of various technologies, the continuous development and renewal of fuel and gas engines has also been promoted. At present, in the international market, the main structure of the fuel or gas engine is: The fuel or gas engine is reciprocating up and down in the vertical direction through the piston in the combustion chamber to drive the connecting rod and the connecting rod to drive the crankshaft to rotate, and finally through the coaxial connection with the crankshaft. The flywheel or the pulley converts the energy (thermal energy) generated by the combustion of the fuel into mechanical energy. The defect is that there are more transmission parts in the mechanical transmission process, the transmission energy loss is larger, the transmission process is complicated, and the kinetic energy direction is not easy to change. This will cause a large loss of the engine, affecting its actual working efficiency and performance. SUMMARY OF THE INVENTION It is an object of the present invention to provide a hydraulic transmission engine and a hydraulically driven vehicle to solve the above problems. In order to achieve the above object, the technical solution of the present invention is achieved as follows: A hydraulic transmission engine includes a combustion chamber and a piston, a liquid storage tank, and an extended end of the piston is located in a hydraulic cylinder disposed in close contact with the combustion chamber; and further includes a high pressure infusion pipeline, a normal pressure liquid return pipeline, and a hydraulic pressure a motor inlet; a liquid inlet and a liquid outlet, wherein one end of the high pressure infusion pipe communicates with the liquid outlet, and the other end is in communication with the hydraulic motor; One end of the pipe is connected to the liquid inlet, and the other end is in communication with the liquid storage tank. Preferably, the return spring is further disposed in the hydraulic cylinder, one end of the return spring is fixedly connected with the protruding end of the piston, and the other end is fixedly connected with the bottom of the hydraulic cylinder; The liquid inlet and the liquid outlet are both disposed at the bottom of the hydraulic red sidewall. Preferably, the combustion chamber includes two sub-combustion chambers integrally formed integrally, the hydraulic cylinder including a first hydraulic cylinder and a second hydraulic cylinder; the piston includes a first piston and a second piston and a connecting shaft, wherein The first piston and the second piston are respectively located in the two sub-combustion chambers, and the head of the first piston and the head of the second piston are fixedly connected by the connecting shaft; the protruding end of the first piston is The elongated ends of the second piston are located within the first hydraulic cylinder and the second hydraulic red, respectively. Preferably, the cavity between the first piston and the second piston inside the combustion chamber is a lubrication chamber; the lubrication chamber is for containing lubricating oil. Preferably, a lubricating oil injection port is further disposed on the sidewall of the lubrication chamber. Preferably, the liquid inlets are four, wherein two of the liquid inlets are respectively disposed at the top and the bottom of the side wall of the first hydraulic cylinder, and the other two inlets are respectively disposed at the The top and bottom of the second hydraulic red sidewall; the liquid outlet is four, wherein the two outlets are respectively disposed at the top and bottom of the first hydraulic red sidewall, and the other two The liquid outlets are respectively disposed at the top and bottom of the sidewall of the second hydraulic red. Preferably, the two sub-combustion chambers in the combustion chamber are sequentially ignited. Preferably, the combustion chamber includes a first combustion chamber, a second combustion chamber and a third combustion chamber which are sequentially disposed and integrally formed; the piston includes a third piston, a fourth piston, and a fifth piston and a sixth piston Wherein: the third piston is located in the first combustion chamber, the fourth piston is located at one end of the second combustion chamber, the fifth piston is located at the other end of the second combustion chamber, and the sixth piston is located at the third combustion chamber a protruding end of the third piston is fixedly connected with an extended end of the fourth piston; a protruding end of the fifth piston is fixedly connected with an extended end of the sixth piston; The cavity between the third piston and the fourth piston is a first hydraulic pump chamber; the liquid inlet and the liquid outlet are disposed on a corresponding sidewall of the first hydraulic pump chamber; a cavity between the fifth piston and the sixth piston in the combustion chamber is a second hydraulic pump chamber; the liquid inlet and the liquid outlet are also disposed in correspondence with the second hydraulic pump chamber The first hydraulic pump chamber and the second hydraulic pump chamber are each provided with a partition plate having a through hole provided on the surface. Preferably, the firing order of the first combustion chamber, the second combustion chamber and the third combustion chamber sequentially disposed in the combustion chamber is: the first combustion chamber and the third combustion chamber are simultaneously ignited, the second The combustion chamber is separately ignited from the first combustion chamber and the third combustion chamber. Accordingly, the present invention also provides a hydraulically driven automobile including the above-described hydraulic transmission engine. Compared with the prior art, the advantages of the embodiments of the present invention are as follows: The present invention provides a hydraulic transmission engine and a hydraulically driven vehicle, wherein, by analyzing the above structure, the piston extension end of the hydraulic transmission engine is located in the hydraulic cylinder due to The action of the combustion chamber (which may be composed of one or more combustion chambers of different configurations) will push the head of the piston to reciprocate within the combustion chamber (ie, the internal combustion cylinder), which will drive the piston due to the reciprocating motion of the piston The protruding end generates a reciprocating stroke in the hydraulic cylinder; the hydraulic red includes a liquid inlet port and a liquid outlet port, and the high pressure infusion pipe (ie, the high pressure infusion line) supplies the transmission fluid to the hydraulic motor (eg: ^ hydraulic oil), the One end of the pressure returning liquid pipe is connected with the liquid inlet; however, each time the reciprocating stroke is generated, the transmission fluid is squeezed once, and the transmission fluid from the hydraulic red is discharged from the liquid outlet, and the transmission liquid is continuously supplied. The inlet port enters, and then the high-pressure output transmission fluid enters the hydraulic motor, thereby providing a hydraulic power source to the hydraulic motor. Since the hydraulic motor is an actuator of the hydraulic system, it can be supplied by a hydraulic pump The liquid pressure can be converted into the mechanical energy (torque and speed) of its output shaft. Thus, the hydraulic transmission engine of the present invention directly converts the mechanical energy of reciprocating piston into hydraulic energy, and then outputs mechanical energy through a hydraulic motor; this structure makes the energy transmission step more simple, and the energy transmission efficiency is further improved by the hydraulic transmission. At the same time, the mechanical energy generated by the reciprocating motion of the piston does not pass through the mechanical transmission member, but through the engine-a pipe (ie, the pipeline) - a hydraulic motor, the transmission energy loss is small, the process is single, and the most important is the kinetic energy direction. Easy to change. In the hydraulic drive vehicle structure provided by the embodiment of the present invention, the hydraulic cylinder is the main energy collecting member. Pulse hydraulic pressure is generated using hydraulic drive technology. The basic principle utilizes the continuous ignition of the internal combustion cylinder during the history of the automobile to promote the reciprocating movement of the piston, and finally pushes the piston protruding end to generate the monthly Yongchong hydraulic pressure in the hydraulic red, and the continuous high pressure monthly Yongchong hydraulic pressure generated by the hydraulic transmission fluid ^ ¹ The oil flow is supplied to the hydraulic motor to provide a power source, and the hydraulic motor outputs mechanical energy to finally drive the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic structural view of a hydraulic transmission engine according to a first embodiment of the present invention; FIG. 2 is a schematic structural view of a hydraulic transmission engine according to a second embodiment of the present invention; FIG. 3 is a hydraulic transmission engine according to a third embodiment of the present invention; FIG. 4 is a schematic structural view of a hydraulic transmission engine according to Embodiment 4 of the present invention. detailed description Further detailed description of the present invention will be given below through specific embodiments and in conjunction with the accompanying drawings. Embodiment 1 Referring to FIG. 1, a first embodiment of the present invention provides a hydraulic transmission engine 1 including a combustion chamber 10 and a piston 11, a liquid storage tank (not shown), and an extended end 110 of the piston 11 (ie, a piston) The tail portion - the piston rod is located in the hydraulic cylinder 12 disposed in close contact with the combustion chamber 10 (ie, the liquid plenum); further includes a high pressure infusion conduit 13, a normal pressure return conduit 14 and a hydraulic motor 15; The hydraulic cylinder 12 is further provided with a liquid inlet 120 and a liquid outlet 121. One end of the high pressure infusion conduit communicates with the liquid outlet 121, and the other end communicates with the hydraulic motor; One end of the pipe communicates with the liquid inlet 120, and the other end communicates with the liquid storage tank, and finally communicates with the hydraulic motor 15. Analysis of the above structure shows that the piston extension end of the hydraulic transmission engine is located in the hydraulic cylinder, and the combustion chamber (which may be composed of one or more combustion chambers of different structures) can push the head of the piston in the combustion chamber. (ie, the internal combustion cylinder) reciprocating motion, because the reciprocating motion of the piston will drive the piston protruding end to generate a reciprocating stroke in the hydraulic cylinder; the hydraulic red includes both the liquid inlet and the liquid outlet, and the high pressure infusion pipeline (ie, high pressure infusion) Pipeline) conveying the transmission fluid (such as the port hydraulic oil) to the hydraulic red inner motor, one end of the atmospheric pressure return pipe is connected with the liquid inlet; however, the transmission fluid is squeezed once every time the reciprocating stroke is generated, the transmission fluid is The transmission fluid from the hydraulic red is not discharged from the liquid outlet 4, and the transmission fluid is continuously supplied from the liquid. The port enters, and then the high-pressure output transmission fluid enters the hydraulic motor, thereby providing a hydraulic power source to the hydraulic motor. Since the hydraulic motor is an actuator of the hydraulic system, it can convert the hydraulic pressure provided by the hydraulic pump into the mechanical energy (torque and speed) of its output shaft. Thus, the hydraulic transmission engine of the present invention directly converts the mechanical energy of reciprocating piston into hydraulic energy, and then outputs mechanical energy through a hydraulic motor; this structure makes the energy transmission step more simple, and the energy transmission efficiency is further improved by the hydraulic transmission. At the same time, the reciprocating motion of the piston does not pass through the mechanical transmission (engine - pipeline (ie pipeline) - hydraulic motor), the transmission energy loss is small, the process is single, and the most important is the kinetic energy direction is easier to change. . Among them, the hydraulic transmission liquid infusion circuit (compressed by a high-pressure infusion pipe and a hydraulic circuit of a normal-pressure liquid return pipe), which also includes a reversing valve to control its opening and stopping and steering and a speed regulating valve. The embodiment of the present invention will not be described again, and the hydraulic pressure of the hydraulic pump is required to be high. Preferably, the hydraulic transmission engine 1 further includes a return spring 16; the return spring is disposed in the hydraulic cylinder, one end of the return spring is fixedly connected with the protruding end of the piston, and the other end is connected to the hydraulic pressure The bottom of the cylinder is fixedly connected; the liquid inlet and the liquid outlet are both disposed at the bottom of the hydraulic red sidewall. It should be noted that the purpose of the above-mentioned return spring is to provide a reciprocating elastic force to the piston, which ensures that the protruding end of the piston can be moved to the bottom of the hydraulic cylinder (ie, the compression return spring), contacts the return spring and is restored by the elastic force of the return spring. position. In general, its advantages are more obvious: 1) Conversion process cartridge: Combustion - increase liquid pressure. 2) There are few mechanical parts in the transmission process: engine - one line one - hydraulic motor.

3) Long transmission distance: The liquid energy is transferred by the pipeline, and the pipeline can be placed within the effective range.

4) Easy to change direction: Since the energy is transmitted through the pipeline, the direction required for the final kinetic energy is very easy to achieve. 5) High fuel utilization rate: A large amount of mechanical energy is reduced due to the reduction of a large number of mechanical parts. Embodiment 2 The hydraulic transmission engine according to Embodiment 2 of the present invention has the following specific structural features on the basis of Embodiment 1: Referring to FIG. 2, a hydraulic transmission engine 1 includes a combustion chamber 10 and a piston 11, and the piston 11 The protruding end 110 is located in the hydraulic cylinder 12 disposed in close contact with the combustion chamber 10; further includes a high pressure infusion pipe 13, a normal pressure return pipe 14 and a hydraulic motor 15; The liquid port 120 and the liquid outlet 121. (The same structure as the above-described first embodiment is not described again.) Specifically, the combustion chamber 10 includes two sub-combustion chambers integrally formed integrally with each other, and the hydraulic cylinder 12 includes a first hydraulic cylinder 122 and a second hydraulic pressure. The cylinder 123 (the hatched portion is illustrated as a transmission fluid); the piston 11 includes a first piston 111 and a second piston 112 and a connecting shaft 113, wherein: the overall structure is two sub-combustion chambers in the middle, and two hydraulic cylinders at both ends (There is also a lubrication chamber between the two sub-combustion chambers). The first piston 111 and the second piston 112 are respectively located in two sub-combustion chambers, and the head of the first piston 111 and the head of the second piston 112 are fixedly connected by the connecting shaft 113; the first piston 111 The extended end of the second piston 112 and the extended end of the second piston 112 are located in the first hydraulic cylinder 122 and the second hydraulic cylinder 123, respectively. It should be noted that, by using two combustion chambers, two reversely disposed pistons, a lubrication chamber, a liquid plenum, and the double combustion chambers are sequentially ignited, the piston is reciprocated to increase the liquid pressure, and the high pressure liquid is used for the high pressure liquid. It is transmitted to a hydraulic motor, which converts the energy generated by the combustion of the fuel into mechanical energy. Preferably, the cavity between the first piston and the second piston inside the combustion chamber is a lubrication chamber 130 (where the hatching portion is illustrated as lubricating oil injected into the lubrication chamber); the lubrication chamber is used for lubrication oil. Preferably, a lubricating oil injection port 131 is further disposed on the sidewall of the lubrication chamber. Preferably, the liquid inlets are four, wherein two of the liquid inlets are respectively disposed at the top and the bottom of the side wall of the first hydraulic cylinder, and the other two inlets are respectively disposed at the The top and bottom of the second hydraulic red sidewall; the liquid outlet is four, wherein the two outlets are respectively disposed at the top and bottom of the first hydraulic red sidewall, and the other two The liquid outlets are respectively disposed at the top and bottom of the sidewall of the second hydraulic red. Preferably, the two sub-combustion chambers in the combustion chamber are sequentially ignited. Embodiment 3

40 pairs of structural hydraulic transmission engines having two combustion chambers have the following specific structural features on the basis of the first embodiment: Referring to FIG. 3, (the same structure as described above is not described again), different Yes, the overall structure is two hydraulic cylinders in the middle, and two sub-combustion chambers at both ends. The piston 11 is an assembly structure composed of two pistons (the protruding ends of the two pistons are fixedly connected), wherein two hydraulic pump chambers are arranged between the two pistons, and the two hydraulic pump chambers are separated by a partition plate 17. (there is a partition between the two hydraulic pump chambers); the partition surface is also provided with a through hole for the protruding end to pass through; (for example, the liquid inlet, the liquid outlet, the liquid storage tank, etc.) As will be described in more detail, preferably, the two sub-combustion chambers in the combustion chamber are sequentially ignited. The hydraulic pulse can also be achieved by the hydraulic transmission engine structure illustrated in Figure 3. Embodiment 4 The hydraulic transmission engine according to Embodiment 3 of the present invention has the following specific structural features on the basis of Embodiment 1: Referring to FIG. 4, a hydraulic transmission engine 1 includes a combustion chamber 10 and a piston 11; and a high pressure infusion pipeline 13. The atmospheric pressure return pipe 14 and the hydraulic motor 15; the hydraulic cylinder is further provided with a liquid inlet 120 and a liquid outlet 121 on the side wall. (The same structure as described above is the same as the first embodiment of the present invention. The combustion chamber 10 includes a first combustion chamber 101, a second combustion chamber 102, and a third combustion chamber 103 which are sequentially disposed and integrally formed; the piston 11 includes a third piston 114, a fourth piston 115, and a fifth piston 116. a sixth piston 117, wherein: the third piston 114 is located in the first combustion chamber 101, the fourth piston 115 is located at one end of the second combustion chamber 102, and the fifth piston 116 is located at the second combustion chamber 102. The other end of the inner portion, the sixth piston 117 is located in the third combustion chamber 103; the protruding end of the third piston 114 is fixedly connected with the protruding end of the fourth piston 115 (ie, the third piston is actually The fourth piston constitutes an integral reciprocating piston assembly; the extended end of the fifth piston 116 is fixedly coupled to the extended end of the sixth piston 117 (ie, the fifth piston and the sixth piston are actually formed) An integral reciprocating piston assembly); a cavity between the third piston 114 and the fourth piston 115 in the combustion chamber is a first hydraulic pump chamber 140 (corresponding to a hydraulic cylinder structure); The inlet port 120 and the outlet port 121 are set. a cavity corresponding to the first hydraulic pump chamber 140; a cavity between the fifth piston 116 and the sixth piston 117 in the combustion chamber is a second hydraulic pump chamber 150; the liquid inlet And a liquid outlet is also disposed on a corresponding side wall of the second hydraulic pump chamber. The first hydraulic pump chamber and the second hydraulic pump chamber are each provided with a partition plate 17 having a through hole on the surface (ie, each hydraulic pump chamber is provided with a partition plate having a through hole provided on the surface); The ignition sequence of the first combustion chamber 101, the second combustion chamber 102, and the third combustion chamber 103 sequentially disposed in the combustion chamber is: the first combustion chamber 101 and the third combustion chamber 103 are simultaneously ignited. The second combustion chamber 102 is ignited at intervals from the first combustion chamber and the third combustion chamber, respectively. See Figure 3, need It is to be noted that when the first combustion chamber 101 and the third combustion chamber 103 are simultaneously ignited, the internal combustion swell is received, and the piston assembly composed of the third piston and the fourth piston moves to the right (ie, the first combustion chamber acts) At the same time, the piston assembly composed of the fifth piston and the sixth piston moves to the left (ie, the third combustion chamber acts); at the next moment, the second combustion chamber ignites, the piston assembly composed of the third piston and the fourth piston And at the same time, the piston assembly composed of the fifth piston and the sixth piston both move in the middle, that is, one stroke is completed. At the same time, when the piston assembly moves at a high speed, the hydraulic pump chamber formed between each set of piston assemblies (for example, the first hydraulic pump chamber and the second hydraulic pump chamber) will generate a monthly output of the liquid through the liquid outlet ( That is, the liquid inlet 120 and the liquid outlet 121 are disposed on the corresponding side wall of the hydraulic pump chamber). First of all, all current cars use fuel combustion to generate kinetic energy, which promotes piston movement, and drives the four-wheel rotation of the car with connecting rods, crankshafts, gearboxes and drive shafts. The disadvantage is that the mechanical part is too complicated, and the mechanical energy consumption in the process of transmitting energy is too large, especially the kinetic energy transmission of the wheel part. Due to the transmission of the two horizontal axes, the minimum ground clearance is limited by the transmission part. Accordingly, embodiments of the present invention also provide a hydraulically driven vehicle including the above described hydraulic transmission engine. It should be noted that the hydraulically driven vehicle according to the embodiment of the present invention may further include a hydraulic storage tank, a hydraulic accumulator, a hydraulic actuator, and the like; and other structural components of the automobile (such as a vehicle body (including a wheel), a control system. The driving system is not the core technical feature of the protection of the present invention, and the embodiment of the present invention is not described again. A vehicle driven by a hydraulic transmission engine: The present invention utilizes a high-pressure liquid generated by a hydraulic transmission engine, and delivers high-pressure liquid to a hydraulic motor through a high-pressure line, and directly drives the four wheels of the automobile to rotate by a hydraulic motor. (The principle is shown in Figure 1) completely changed the driving method of the existing car. The advantages are: 1) Conversion process cartridge: Combustion - increase liquid pressure - hydraulic motor. 2) There are few mechanical parts in the transmission process: engine --- pipeline --- hydraulic motor. 3) Long transmission distance: The energy generated by the hydraulic engine can be directly transmitted to the four wheels of the car by the high-pressure pipeline. 4) Easy to change direction: Since the energy is transmitted through the pipeline, the direction required for the final kinetic energy is very easy to achieve. High fuel efficiency: Due to the reduction of a large number of mechanical parts, a large amount of mechanical energy consumption is reduced. The pressure loss of the pipeline is related to the diameter and length of the pipeline and the nature of the liquid used. The minimum ground clearance of existing vehicles can be increased to the beam of the vehicle. As another embodiment, the embodiment of the present invention further provides an automobile driven by a hydraulic transmission engine. The invention utilizes a high-pressure liquid generated by an existing engine straight, gearbox, high-pressure piston pump, and passes through a high-pressure pipeline. The high pressure liquid is sent to the hydraulic motor, and the hydraulic motor directly drives the four wheels of the car to rotate. It completely changes the driving method of the existing car (which can also achieve the above technical effects). In an embodiment of the invention, the hydraulic cylinder is the primary energy gathering component. Pulse hydraulic pressure is generated using hydraulic drive technology. The basic principle is to use the continuous ignition of the internal combustion cylinder to push the piston to reciprocate during the process of the car, and finally push the piston protruding end to generate the monthly Yongchong hydraulic pressure in the hydraulic cylinder. The hydraulic high-pressure permanent hydraulic oil flow generated by the hydraulic transmission fluid is supplied to the hydraulic motor to provide a power source, and the hydraulic motor outputs mechanical energy to finally drive the vehicle. The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Claims

Claims: A hydraulic transmission engine, comprising: a combustion chamber and a piston, a liquid storage tank, the protruding end of the piston is located in a hydraulic cylinder disposed in close contact with the combustion chamber; further comprising a high pressure infusion pipe, often a liquid returning pipe and a hydraulic motor; a side of the hydraulic cylinder is further provided with a liquid inlet and a liquid outlet, one end of the high pressure infusion pipe is connected to the liquid outlet, and the other end is connected to the hydraulic motor; The atmospheric pressure return pipe has one end connected to the liquid inlet and the other end being in communication with the liquid storage tank. A hydraulic transmission engine according to claim 1, further comprising a return spring; said return spring being disposed in said hydraulic cylinder, one end of said return spring being fixedly coupled to an extended end of said piston, and One end is fixedly connected to the bottom of the hydraulic cylinder; the liquid inlet and the liquid outlet are both disposed at the bottom of the hydraulic red sidewall. A hydraulic transmission engine according to claim 1, wherein said combustion chamber includes two sub-combustion chambers integrally formed integrally with each other, said hydraulic cylinder including a first hydraulic cylinder and a second hydraulic cylinder disposed opposite to each other; The piston includes a first piston and a second piston and a connecting shaft, wherein: the first piston and the second piston are respectively located in the two sub-combustion chambers, and the head of the first piston and the head of the second piston pass through the connection The shaft is fixedly connected; the extended end of the first piston and the extended end of the second piston are respectively located in the first hydraulic red and the second hydraulic red. A hydraulic transmission engine according to claim 3, wherein A cavity between the first piston and the second piston inside the combustion chamber is a lubrication chamber; the lubrication chamber is for containing lubricating oil.

The hydraulic transmission engine according to claim 4, wherein a lubricating oil injection port is further disposed on a side wall of the lubrication chamber.

6. The hydraulic transmission engine according to claim 3, wherein the inlet ports are four, and wherein the two inlet ports are respectively disposed at the top and bottom of the side wall of the first hydraulic cylinder The other two inlet ports are respectively disposed at the top and the bottom of the side wall of the second hydraulic cylinder; the liquid outlets are four, and two of the liquid outlets are respectively disposed at the first The top and bottom of the side wall of the hydraulic cylinder, and the other two of the liquid outlets are respectively disposed at the top and bottom of the side wall of the second hydraulic cylinder.

7. The hydraulic transmission engine according to claim 3, wherein the two sub-combustion chambers in the combustion chamber are sequentially ignited.

8. The hydraulic transmission engine according to claim 7, wherein the combustion chamber includes a first combustion chamber, a second combustion chamber, and a third combustion chamber which are sequentially disposed and integrally formed; the piston includes a third a piston, a fourth piston, and a fifth piston and a sixth piston, wherein: the third piston is located in the first combustion chamber, the fourth piston is located at one end of the second combustion chamber, and the fifth piston is located in the second combustion chamber The other end of the third piston is located in the third combustion chamber; the protruding end of the third piston is fixedly connected with the protruding end of the fourth piston; the protruding end of the fifth piston and the first The elongated end of the six piston is fixedly connected; the cavity between the third piston and the fourth piston in the combustion chamber is a first hydraulic pump chamber; the liquid inlet and the liquid outlet are disposed at the same a first hydraulic pump chamber corresponding to the side wall; a cavity between the fifth piston and the sixth piston in the combustion chamber is a second hydraulic pump chamber; the liquid inlet and the liquid outlet are also provided In The first hydraulic pump chamber and the second hydraulic pump chamber are each provided with a partition plate having a through hole provided on the surface of the second hydraulic pump chamber. A hydraulic transmission engine according to claim 8, wherein a firing order of the first combustion chamber, the second combustion chamber, and the third combustion chamber sequentially disposed in the combustion chamber is: the first combustion chamber and The third combustion chamber is simultaneously ignited, and the second combustion chamber is separately ignited from the first combustion chamber and the third combustion chamber. A hydraulically driven vehicle characterized by comprising the hydraulic transmission engine of any of claims 1-9.