CN116025463A

CN116025463A - Automobile exhaust braking device and exhaust braking system

Info

Publication number: CN116025463A
Application number: CN202211668262.6A
Authority: CN
Inventors: 郭步华
Original assignee: Jiangsu Juncheng Vehicle Industry Co ltd
Current assignee: Jiangsu Juncheng Vehicle Industry Co ltd
Priority date: 2022-12-24
Filing date: 2022-12-24
Publication date: 2023-04-28

Abstract

The invention discloses an automobile exhaust braking device and an automobile exhaust braking system, wherein the automobile exhaust braking system comprises a clutch linkage switch, a generator and an electromagnetic valve, wherein an air storage cylinder is connected with the electromagnetic valve through a pipeline, the electromagnetic valve is connected with the exhaust braking device through a pipeline, and a crank crankshaft arranged on the exhaust braking device is connected with the generator; the automobile exhaust braking device comprises four groups of cylinders, a cam shaft, a cam, a crankshaft and a crank, wherein a middle rod body of a piston arranged in each cylinder is connected with the crank arranged on the crankshaft, and valve bodies are arranged on each of an exhaust valve and an intake valve; according to the automobile exhaust braking device, the upward movement of the piston is resisted, so that the exhaust stroke of the engine is blocked, the rotating speed of the crankshaft of the engine is limited, the exhaust braking function is realized, the air port of the cylinder is matched with the sealing plate through a horn-shaped structure, the sealing plate is pushed through the auxiliary of a mechanical structure, and the problem of clamping stagnation cannot be caused due to excessive carbon deposition.

Description

Automobile exhaust braking device and exhaust braking system

Technical Field

The invention relates to the field of automobile exhaust braking, in particular to an automobile exhaust braking device and an exhaust braking system.

Background

When the road transport vehicle runs on a long-slope road section and the vehicle descends, a component force exists in the descending direction due to the self gravity, so that the vehicle is automatically accelerated, and the acceleration effect is enhanced along with the increase of the gradient and the increase of the distance. Under the action of inertial acceleration, a driver drives a vehicle to descend a slope frequently and for a long time to use a foot brake, a brake block and a wheel drum are rubbed and heated, the temperature is increased, brake fluid is easy to reach a volatilization point, the surface of the brake block is easy to form coking, the braking effect is obviously reduced, braking failure is seriously caused, accidents are caused, in order to reduce the temperature of the brake, a water tank with different forms is arranged at the connecting part of a cab and a carriage of a truck in a mountain area, a plastic pipe is connected between the hoops and the wheel drums of each brake, and the high temperature generated by friction is reduced by a slow dripping method, so that the vehicle brake of the descending and the long slope is kept in a proper temperature state. However, in the actual use process, the effect is not ideal, and a plurality of side effects exist. Such as sand, dirt, etc. in the pipeline, causing blockage of the water pipe and non-smooth dripping. In addition to mechanical braking, engine braking is also employed. The engine brake is usually realized by an exhaust brake valve which is connected in series on an engine exhaust pipe, when in operation, the sectional area of the exhaust pipe is reduced by a butterfly valve device, and the exhaust resistance is improved, so that the engine brake effect is achieved.

Disclosure of Invention

The invention aims to provide an automobile exhaust braking device and an exhaust braking system.

The invention is realized by the following technical scheme.

The utility model provides an automobile exhaust braking system, includes clutch linkage switch, generator and solenoid valve, the gas receiver passes through the pipe connection solenoid valve, and the solenoid valve passes through pipe connection exhaust braking device, and the crank bent axle that sets up on the exhaust braking device connects the generator, and generator electric connection battery, the battery passes through the circuit connection clutch linkage switch that has exhaust braking switch, and clutch linkage switch electric connection solenoid valve, solenoid valve electric connection accelerator pedal linkage switch simultaneously.

Preferably, an exhaust brake indicator lamp is arranged on a circuit connected with the clutch linkage switch and the accelerator pedal linkage switch.

The utility model provides an automobile exhaust braking device, includes four cylinder, camshaft, cam, bent axle and crank of group, cylinder internally mounted's piston middle part body of rod is connected with the crank that sets up on the bent axle, and is provided with intake valve and exhaust valve above the cylinder, all install the valve body on exhaust valve and the intake valve, the valve body top is corresponding with the cam that sets up on the camshaft, and the belt pulley is installed to camshaft one end, and the belt pulley of camshaft end installation passes through the belt pulley intercommunication of hold-in range and bent axle end installation.

Preferably, the exhaust valve arranged on the cylinder and the valve body arranged above the intake valve correspond to cams, and the protruding parts of two adjacent groups of cams arranged on the cam shaft are opposite in direction.

Preferably, intake valves on four groups of cylinders arranged on the exhaust brake device are connected with an engine exhaust manifold, and exhaust valves on the four groups of cylinders are connected with an automobile exhaust pipe.

Preferably, the valve body comprises a pressing plate, a spring, a pipe orifice and a gas transmission port, wherein the cylinder cover body is arranged above the cylinder, the sealing plate is pressed, the spring is arranged on the sealing plate through a spring seat, the pressing plate is arranged above the spring, the middle part of the pressing plate is connected with a rod body, the rod body penetrates through the bottom of the sealing plate to be provided with the sealing plate, the gas transmission port is arranged below the cylinder cover body, and the pipe orifice is arranged at the bottom of the gas transmission port.

Preferably, the pipe orifice is of a horn-shaped structure, the bottom of the pipe orifice is attached to the sealing plate, and the rod body pushes the sealing plate to move downwards to be separated from the bottom opening of the pipe orifice.

Preferably, a crankshaft arranged on the exhaust brake device is connected with a device for providing resistance torque, and the belt transmission ratio of the crankshaft to the camshaft is 1:1.

Preferably, the means for providing a resistive torque is an electrical generator.

Preferably, the means for providing a resistive torque is a helical spring accumulator.

According to the technical scheme, the beneficial effects of the invention are as follows:

the invention provides an automobile exhaust braking system and an exhaust braking system:

the valve on the exhaust manifold of the engine is controlled to enable engine waste gas to enter, the brake device starts to work, the crankshaft rotates to enable the piston to move upwards, the crankshaft rotates in a circulating mode, the pressure energy of automobile exhaust is converted into crankshaft kinetic energy and is output outwards, the pressure in the exhaust pipe of the automobile engine is obviously increased due to the effect of external load of the converter, the upward movement of the piston is resisted, the exhaust stroke of the engine is further blocked, the rotating speed of the crankshaft of the engine is limited, the function of exhaust braking is achieved, the horn-shaped structure is adopted for matching with the sealing plate at the air port of the cylinder, the sealing plate is pushed in an auxiliary mode through a mechanical structure, and too much carbon deposit can not cause the problem of clamping stagnation.

Drawings

FIG. 1 is a schematic illustration of an exhaust brake system for an automobile;

FIG. 2 is a schematic illustration of an exhaust brake apparatus for an automobile;

FIG. 3 is a schematic view of an exhaust duct of an automotive exhaust brake apparatus;

fig. 4 is a schematic view of a valve body of an exhaust brake device for an automobile.

Reference numerals in the drawings: 1. a storage battery; 2. an exhaust brake switch; 3. the exhaust brake is used as an indicator lamp; 4. a clutch linkage switch; 5. an accelerator pedal linkage switch; 6. an exhaust brake device; 601. a crankshaft; 602. a cam shaft; 603. an exhaust valve; 604. an intake valve; 605. a cam; 606. a belt pulley; 607. a piston; 608. a synchronous belt; 609. a cylinder; 610. a crank; 611. a valve body; 6111. a pressing plate; 6112. a spring; 6113. a rod body; 6114. a cylinder head body; 6115. a pipe orifice; 6116. a sealing plate; 6117. a gas transfer port; 6118. a sealing plate; 612. an engine exhaust manifold; 7. a generator; 8. an electromagnetic valve; 9. and an air cylinder.

Detailed Description

The following examples are illustrative of the invention but are not intended to limit the scope of the invention. The implementation conditions used in the examples can be further adjusted according to the conditions of the manufacturer, and the implementation conditions not illustrated are usually conventional experimental conditions.

The first embodiment is as follows: as shown in fig. 1-4: the utility model provides an automobile exhaust braking system, including clutch linkage switch 4, generator 7 and solenoid valve 8, gas receiver 9 passes through pipe connection solenoid valve 8, and solenoid valve 8 passes through pipe connection exhaust braking device 6, the crank bent axle 601 that sets up on the exhaust braking device 6 connects generator 7, and generator 7 electric connection battery 1, battery 1 is through the circuit connection clutch linkage switch 4 that has exhaust braking switch 2, and clutch linkage switch 4 electric connection solenoid valve 8, solenoid valve 8 electric connection accelerator pedal linkage switch 5 simultaneously, be provided with exhaust braking on the circuit that clutch linkage switch 4 and accelerator pedal linkage switch 5 are connected and act as pilot lamp 3.

An accelerator pedal linkage switch 5 is installed at the accelerator operation position of the engine, and a signal of accelerator pedal operation is output as long as the accelerator operation is changed rapidly relative to the engine. A clutch interlock switch 4 is provided at the clutch operation position, and the clutch interlock switch 4 outputs a clutch operation signal when the driver is instructed to shift gears as long as the clutch is depressed. According to the requirement, some road running engine vehicles can also be provided with an accelerator pedal linkage switch 5 only at the accelerator operation position, any one of the exhaust brake switch 2, the clutch linkage switch 4 and the accelerator pedal linkage switch 5 is disconnected, so that the driver turns off the exhaust brake switch 2, or operates the engine accelerator pedal or the clutch, the electromagnetic valve 8 is powered off to release the exhaust brake state, once the driver operates the exhaust brake switch 2, and the clutch linkage switch 4 and the accelerator pedal linkage switch 5 do not detect a signal of a desired action, the electromagnetic valve is powered on, the exhaust brake action is implemented, the operation of the exhaust brake device 6 drives the generator 7 to rotate, and the generator 7 generates electric energy to be stored in the storage battery 1.

The second embodiment is as follows: the embodiment is further limited by the first embodiment, and an automobile exhaust braking device comprises four groups of cylinders 609, a cam shaft 602, a cam 605, a crankshaft 601 and a crank 610, wherein a rod body in the middle of a piston 607 installed in each cylinder 609 is connected with the crank 610 arranged on the crankshaft 601, an intake valve 604 and an exhaust valve 603 are arranged above each cylinder 609, valve bodies 611 are installed on each exhaust valve 603 and each intake valve 604, the upper part of each valve body 611 corresponds to the cam 605 arranged on the cam shaft 602, a belt pulley 606 is installed at one end of the cam shaft 602, and the belt pulley 606 installed at the end of the cam shaft 602 is communicated with the belt pulley 606 installed at the end of the crankshaft 601 through a synchronous belt 608; the exhaust valve 603 provided on the cylinder 609 and the valve body 611 mounted above the intake valve 604 each correspond to the cam 605, and protruding portions of the adjacent two sets of cams 605 provided on the camshaft 602 are opposite in direction.

When the vehicle brakes, engine exhaust gas enters 612 through controlling a valve on an engine exhaust manifold, so that an exhaust braking device 6 starts to work, no. 1, no. 2, no. 3 and No. 4 cylinders are arranged on the exhaust braking device 6 from left to right, in an intake stroke, the intake valves of the No. 1 cylinder and the No. 3 cylinder are opened, the exhaust valve of the No. 1 cylinder is closed, high-pressure gas discharged by the engine enters the No. 1 cylinder and the No. 3 cylinder, a piston 607 of the engine is pushed to move downwards to drive a crankshaft 601 to rotate and generate torque, in the process, the No. 2 cylinder and the No. 4 cylinder are in an exhaust stroke, a camshaft 602 continues to rotate, the exhaust stroke of the No. 1 cylinder and the No. 3 cylinder starts to be opened, the intake valve 604 is closed, the crankshaft 1 rotates to enable the piston 607 to move upwards, the gas is extruded out of the cylinder by the piston 607 to enter an automobile exhaust cylinder at a lower pressure to be discharged into the atmosphere, meanwhile, the No. 2 cylinder and No. 4 cylinder enter the intake stroke, the next cycle work is started, and the cycle is reciprocated, so that the crankshaft 601 continuously rotates, the pressure energy of the automobile exhaust pipe is converted into the crankshaft 601 and is output outwards, and the pressure of the engine exhaust pipe is obviously increases due to the effect of an external load of the exhaust braking device 6, the piston is enabled to move upwards, and the resistance of the engine is blocked, and the engine is braked. The opening and closing of the intake valve 604 and the exhaust valve 603 of each cylinder are controlled by the rotation of the cam shaft 602, and the valve timing of the No. 1 cylinder, the No. 3 cylinder and the valve timing of the No. 2 cylinder and the valve timing of the No. 4 cylinder are different by 180 degrees, so that high-pressure gas sequentially enters different cylinders, and pistons of the cylinders sequentially do work to realize continuous rotation of a crankshaft until the braking process is finished; intake valves 604 on four groups of cylinders 609 provided on the exhaust brake 6 are connected to an engine exhaust manifold 612, and exhaust valves 603 on four groups of cylinders 609 are connected to an automobile exhaust stack.

And a third specific embodiment: the present embodiment is further defined in the second embodiment, where the valve body 611 includes a pressing plate 6111, a spring 6112, a pipe orifice 6115 and a gas transmission port 6117, a sealing plate 6118 is pressed on a cylinder head body 6114 provided above the cylinder 609, the spring 6112 is installed on the sealing plate 6118 through a spring seat, the pressing plate 6111 is installed above the spring 6112, a rod body 6113 is connected to the middle part of the pressing plate 6111, the rod body 6113 passes through the bottom of the sealing plate 6118 and is provided with a sealing plate 6116, the gas transmission port 6117 is installed below the cylinder head body 6114, and the pipe orifice 6115 is installed at the bottom of the gas transmission port 6117.

The gas delivery port 6117 is internally provided with a gas delivery port 609, the gas delivery port 609 is internally provided with a pushing piston 607, the pushing piston 607 moves to drive a crankshaft 601 to rotate, a belt pulley which rotates synchronously drives a cam shaft 602 to rotate, the cam 605 rotates to press down a pressing plate 6111, then a sealing plate 6116 is separated from a pipe orifice 6115, a gas delivery channel is led in, when the cam 605 is separated from the pressing plate 6111, a spring 6112 rebounds to jack the pressing plate 6111, and the sealing plate 6116 is attached to the pipe orifice 6115.

The pipe orifice 6115 is of a horn-shaped structure, carbon is accumulated on the side surface of the bottom of the horn-shaped structure, the clamping stagnation problem of the closing structure does not occur, the bottom of the pipe orifice 6115 is attached to the sealing plate 6116, and meanwhile the rod body 6113 pushes the sealing plate 6116 to move downwards to be separated from the bottom opening of the pipe orifice 6115.

The crankshaft 601 provided on the exhaust brake 6 is connected to a device for providing resistance torque, while the belt transmission ratio of the crankshaft 601 and the camshaft 602 is 1:1.

The specific embodiment IV is as follows: the third embodiment is further limited, the device for providing resistance torque is a generator, kinetic energy output by a crankshaft is utilized to generate electricity, the crankshaft is connected with the generator, a continuously variable transmission can be additionally arranged between the crankshaft and the generator, the transmission ratio between the crankshaft and the generator can be changed, the resistance torque of the generator is approximately unchanged in a certain larger rotating speed range, the resistance of the converter is increased when the transmission ratio is increased, and then the braking force of an automobile is increased.

Fifth embodiment: in this embodiment, the third embodiment is further limited, the device for providing the resistance torque is a coil spring energy accumulator, kinetic energy output by the crankshaft is converted into elastic potential energy of the coil spring energy accumulator and stored, the crankshaft can be rigidly connected with a central shaft of the energy accumulator, and the resistance torque is changed by changing the number of the connected coil springs, so that braking force provided by the whole set of device is changed, the elastic potential energy converted by the energy accumulator does not need to be consumed in real time, but because the energy density of the spring is limited, the upper limit of stored energy is lower, and therefore, the energy needs to be released in time.

It should be understood that the above description is not intended to limit the invention to the particular embodiments disclosed, but to limit the invention to the particular embodiments disclosed, and that various changes, modifications, additions and substitutions can be made by one of ordinary skill in the art without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. An automobile exhaust braking system comprises a clutch linkage switch (4), a generator (7) and an electromagnetic valve (8), and is characterized in that: the air receiver (9) is connected with the electromagnetic valve (8) through a pipeline, the electromagnetic valve (8) is connected with the exhaust braking device (6) through a pipeline, a crank crankshaft (601) arranged on the exhaust braking device (6) is connected with the generator (7), the generator (7) is electrically connected with the storage battery (1), the storage battery (1) is connected with the clutch linkage switch (4) through a circuit with the exhaust braking switch (2), the clutch linkage switch (4) is electrically connected with the electromagnetic valve (8), and meanwhile the electromagnetic valve (8) is electrically connected with the accelerator pedal linkage switch (5).

2. An automotive exhaust braking system according to claim 1, wherein: an exhaust brake indicator lamp (3) is arranged on a circuit connected with the clutch linkage switch (4) and the accelerator pedal linkage switch (5).

3. An exhaust brake apparatus for a vehicle as claimed in any one of claims 1-2, comprising four sets of cylinders (609), a camshaft (602), a cam (605), a crankshaft (601) and a crank (610), characterized in that: the middle rod body of a piston (607) of the cylinder (609) is connected with a crank (610) arranged on a crankshaft (601), an intake valve (604) and an exhaust valve (603) are arranged above the cylinder (609), valve bodies (611) are arranged on the exhaust valve (603) and the intake valve (604), the upper parts of the valve bodies (611) correspond to cams (605) arranged on a cam shaft (602), a belt pulley (606) is arranged at one end of the cam shaft (602), and the belt pulley (606) arranged at the end of the cam shaft (602) is communicated with the belt pulley (606) arranged at the end of the crankshaft (601) through a synchronous belt (608).

4. A vehicle exhaust brake arrangement according to claim 3, wherein: the exhaust valve (603) arranged on the cylinder (609) and the valve body (611) arranged above the intake valve (604) correspond to the cams (605), and protruding parts of two adjacent groups of cams (605) arranged on the cam shaft (602) are opposite in direction.

5. A vehicle exhaust brake arrangement according to claim 3, wherein: intake valves (604) on four groups of cylinders (609) arranged on the exhaust braking device (6) are connected with an engine exhaust manifold (612), and exhaust valves (603) on the four groups of cylinders (609) are connected with an automobile exhaust pipe.

6. A vehicle exhaust brake arrangement according to claim 3, wherein: the valve body (611) comprises a pressing plate (6111), a spring (6112), a pipe orifice (6115) and a gas transmission port (6117), a sealing plate (6118) is pressed on a cylinder cover body (6114) arranged above the cylinder (609), the spring (6112) is installed on the sealing plate (6118) through a spring seat, the pressing plate (6111) is installed above the spring (6112), the middle part of the pressing plate (6111) is connected with a rod body (6113), the rod body (6113) penetrates through the bottom of the sealing plate (6118) to be installed with a sealing plate (6116), the gas transmission port (6117) is installed below the cylinder cover body (6114), and the pipe orifice (6115) is installed at the bottom of the gas transmission port (6117).

7. An exhaust brake apparatus for a vehicle according to claim 6, wherein: the pipe orifice (6115) is of a horn-shaped structure, the bottom of the pipe orifice (6115) is attached to the sealing plate (6116), and meanwhile the rod body (6113) pushes the sealing plate (6116) to move downwards to be separated from the bottom opening of the pipe orifice (6115).

8. A vehicle exhaust brake arrangement according to claim 3, wherein: a crankshaft (601) arranged on the exhaust brake device (6) is connected with a device for providing resistance torque, and meanwhile, the belt transmission ratio of the crankshaft (601) to a camshaft (602) is 1:1.

9. An exhaust brake apparatus for a vehicle according to claim 8, wherein: the means for providing a resistive torque is a generator.

10. An exhaust brake apparatus for a vehicle according to claim 8, wherein: the means for providing the resistive torque is a coil spring accumulator.