WO2011110046A1

WO2011110046A1 - Variable power gas distribution control system for engine

Info

Publication number: WO2011110046A1
Application number: PCT/CN2011/000033
Authority: WO
Inventors: 于宥源; 于晓芳
Original assignee: Yu Youyuan; Yu Xiaofang
Priority date: 2010-03-09
Filing date: 2011-01-07
Publication date: 2011-09-15
Also published as: CN101881198A

Abstract

Disclosed is a variable power gas distribution control system for engine, which includes a cam (1), a camshaft in a gas distribution mechanism, a cam (8) of a fuel injection pump, a roller (7) and a supporting block (2). A working surface of the supporting block (2) is a contact surface between a tappet (3) of a cylinder exhaust valve and a rocker arm (4), a contact surface between a hydraulic tappet (5) of the exhaust valve and the cam (1), a contact surface between a rocker arm (4) and a camshaft, or a contact surface between the cam (8) of the fuel injection pump of a diesel engine and the roller (7). The exhaust valve is forced to open by pushing the supporting block (2) into a gap between the tappet (3) of the cylinder exhaust valve and the rocker arm (4), a gap between the hydraulic tappet (5) of the exhaust valve and the cam (1), a gap between the rocker arm (4) and the camshaft, or a gap between the cam (8) of the fuel injection pump of the diesel engine and the roller (7), thereby achieving the purpose of saving fuel.

Description

Engine variable power gas distribution control system 1. Technical field

The invention relates to an engine, in particular to an engine variable power valve control system.

2. BACKGROUND OF THE INVENTION In the background art, when the internal combustion engine is working, the valve train can only press the intake valve to open the intake valve to enter the combustion chamber according to a fixed procedure, the piston compresses the combustible mixed gas upward, and the spark plug discharges and ignites, so that the combustible mixture The gas burns and explodes, forcing the piston to generate a downward thrust that causes the crankshaft to rotate. When the piston is ascending, the exhaust valve is pressed by the cam to discharge the exhaust gas. The piston is up and down twice. 720 degrees to complete the four strokes of the intake, pressure, explosion, and discharge. The uninterrupted work of the piston causes the crankshaft to rotate and output power. At present, the cylinder is used as the unit, and the intake and exhaust have two valves, three valves, four valves and five valves. The disadvantage is that the engine is installed on a moving vehicle. Because of the tools with various functions, such as generators, air conditioners, water pumps, oil pumps, air pumps, brake vacuum pumps, etc., the engine power is required to drive the above additional components, so the engine is strictly prohibited. Stop and coast during driving. Third, the invention content

SUMMARY OF THE INVENTION The object of the present invention is to avoid the above disadvantages, and to provide an engine variable power valve control system capable of completing fuel economy, pressure relief and light load, and fuel saving effect.

Technical Solution of the Invention: An engine variable power valve control system, including a cam in an engine cylinder, a camshaft as a valve train, and a diesel engine (with an inline fuel injection pump), a cam of a fuel injection system, and a camshaft of a fuel injection pump The cam is provided with a support block, the support block is a working surface on the contact surface of the cylinder exhaust valve tappet and the rocker arm, or the support block is corrected on the contact surface of the cylinder exhaust valve hydraulic tappet and the cam ( Rule 91) For the working surface, the contact surface of the support block on the rocker arm and the camshaft is the working surface, or the contact surface of the support block on the diesel fuel injection pump wheel and the roller is the working surface.

The cam groove is disposed on a cam symmetry plane where the cam shaft contacts the exhaust valve. The support block is a direct push type support block, and is driven by a hydraulic cylinder, a stepping motor, and a bidirectional electromagnet. The gas distribution mechanism is a rocker type gas distribution mechanism, and a support block is installed between the camshaft exhaust valve tappets and the exhaust valve hydraulic tappet or the rocker arm.

The gas distribution mechanism is a gas distribution mechanism of a four-stroke internal combustion engine.

The engine variable power distribution control system is implemented by when the engine speed detected by the sensor for measuring the engine speed is higher than the minimum fuel economy control speed, the voltage comparator outputs a high level, and the forward input of the simulator is high. Level, when the engine speed detected by the sensor is lower than the minimum fuel-saving control speed, the negative input of the simulator is low.

When the high level is described, the simulator starts to operate, so that the fuel injection system controls the engine to stop fuel injection. When the low level is described, the simulator stops working, so that the fuel injection system controls the engine to normally inject oil. Advantages of the invention: The exhaust valve is forcibly opened by installing a pressure relief support block or a pressure relief support frame under the camshaft (upper), and a fuel cut support block (a diesel engine equipped with an inline fuel injection pump) is installed. The plunger is forced to be in the top dead center position, so that the engine releases the light load and the diesel fuel injection pump stops supplying oil, thereby achieving the purpose of saving idle speed and no work power consumption.

Fourth, the description of the drawings

The invention is further illustrated by the drawings and the description of the preferred embodiments.

Figure 1 is a schematic view of a camshaft before slotting in the present invention; Correction 3⁄4 (Rule 91) 2 is a schematic view of a camshaft after slotting in the present invention; FIG. 3 is a schematic structural view of an exhaust mechanism according to the present invention; FIG. 4 is a schematic structural view of the integral support block of the present invention; FIG. 6 is a structural schematic view of the gap between the cam and the tappet after the support block is pushed into the gap between the cam and the tappet; FIG. 7 is a structure of the support block not entering the gap between the cam and the hydraulic tappet in the present invention; Figure 8 is a schematic view showing the structure of the support block after being pushed into the gap between the cam and the hydraulic tappet; Fig. 9 is a schematic view showing the structure of the support block of the diesel fuel injection pump in the diesel fuel injection pump;

Figure 10 is a schematic view showing the structure of the device of the present invention after the support block of the diesel fuel injection pump is pushed by the cam and the roller;

Figure 11 is a schematic diagram of an electronic control system in the apparatus of the present invention.

The above reference numerals indicate: 1-cam, 2-support block, 3-exhaust valve tappet, 4-rocker arm, 5-hydraulic tappet, 6-cam groove, 7-roller, 8-diesel fuel injection pump cam .

V. Specific implementation methods

The invention will be described in detail below with reference to the accompanying drawings.

Referring to Figures 1-8: an engine variable power valve control system includes a cam 1 in an engine cylinder and a camshaft as a valve train, and a support block 2 (support frame) is disposed under the engine cam (upper) surface , the support block 2 is the working surface of the cylinder exhaust valve tappet 3 and the rocker arm 4, or the support block 2 is at the cylinder exhaust valve hydraulic force 5 and the cam contact surface is the working surface, or the support block 2 The contact surface of the rocker arm 4 and the camshaft is a working surface, and a cam correction is provided on the cam symmetry plane of the camshaft contacting the exhaust valve (Article 91) Slot 6. The support block 2 is a direct push type support block, which can be driven by a hydraulic cylinder, a two-way electromagnet, a stepper (servo) motor, a gas distribution mechanism of a rocker arm type gas distribution mechanism, a camshaft exhaust valve between the tappets, and an exhaust gas. A support block is installed between the hydraulic tappets of the door or between the rocker arms, and the gas distribution mechanism is a gas distribution mechanism of the four-stroke internal combustion engine. When the engine (internal combustion engine) is traveling at idle speed or without active power, the driver's foot leaves the accelerator pedal, and the gap sensor mounted on the accelerator pedal and the device that detects the speed will detect signals (gap signal and speed signal, when the vehicle travels Above 20km/h, the device starts to work. It is transmitted to the vehicle's electronic control system. The ECU in the electronic control system issues control commands to the engine fuel injection system to stop the engine from injecting fuel. The electronic control system simultaneously issues command control support blocks ( The support frame) is pushed forward, and the support block (support frame) is forced into the contact gap between the cam and the tappet/hydraulic tappet/pitcher/push rod of the exhaust valve, so that the exhaust valve is normally open Working state, so that the engine depressurizes and saves fuel. Support block (support frame) After exiting from the contact gap between the cam and the exhaust valve tappet/hydraulic tappet/pitcher/push rod, the engine (internal combustion engine) resumes normal gas distribution injection work. 9 to FIG. 10 is a schematic structural view of a device for controlling a diesel fuel injection system of a diesel engine (with an in-line fuel injection pump) according to the present invention, the device comprising a support block 2, a diesel fuel injection pump cam 8 and a roller 7, A support block is arranged between the diesel engine fuel injection pump cam 8 and the roller 7. The support block 2 is a direct push type support block, which can be driven by a hydraulic cylinder, a two-way electromagnet, a stepper (servo) motor, and a support block 2 in a diesel fuel injection pump cam. 8 The contact surface with the roller 7 is a working surface, and a cam groove 6 is arranged on the cam symmetry plane of the cam shaft contacting the roller. When the control mechanism is in operation, the support block 2 in the device enters the diesel fuel injection pump cam 8 In the cam groove 6, the roller 7 is always in the top circle position of the diesel fuel injection pump cam 8, the diesel fuel injection pump plunger is maintained at the top dead center position, and the fuel injection pump stops supplying oil, so as to control the diesel fuel injection pump to not spray the oil.

See Figure 11: For the purpose of pressure relief, fuel saving and partial cylinder decompression, section correction in the present invention, 3⁄4 (Rule 91) The working principle of the oil under two working conditions is further explained: All cylinder pressure release, fuel saving: When the sensor measuring the engine speed detects that the engine speed is higher than the set speed, the voltage comparator outputs a high level and when satisfied In the fuel-saving condition (when the driver's foot leaves the accelerator pedal, the brakes and the clutch are not working), the simulator starts to work, so that the fuel injection system controls the engine to stop the fuel injection, and at the same time controls the solenoid valve that supports the support block (support frame). Electric power, oil (or hydraulic oil) enters the hydraulic cylinder, pushing the piston to push the support block (support frame) into the contact gap between the camshaft (rocker arm) and the tappet/hydraulic tappet, so that the exhaust valve is Forced to open, thus achieving the purpose of releasing pressure and fuel for the engine; At the same time, the fuel-saving indicator light is on, indicating that the driver's vehicle is in a fuel-saving state, and the brake indicator light is on to prevent the vehicle from colliding. When the sensor measuring the engine speed detects that the engine speed is lower than the set speed, the voltage comparator outputs a low level, the simulator stops working, and the fuel injection system controls the engine to normally inject oil. Partial cylinder pressure relief, fuel saving: The linkage switch of the ECU to the injector line is set inside the simulator, which is linked with the switch of the power component that controls the movement of the support block (support frame). (Different switches control different power components, each switch All work independently, so as to achieve the purpose of releasing pressure and saving fuel for some cylinders. In driving, the system adapts the number of cylinders for engine pressure relief and fuel saving according to the driving speed of the vehicle.

Correction page (Article 91)

Claims

Claim

1. An engine variable power valve control system comprising a cam (1) in an engine cylinder, a camshaft as a valve train, a cam of a diesel fuel injection system, and a fuel injection camshaft, wherein: the cam A support block (2) is provided on the support block (2) at the contact surface of the cylinder exhaust valve tappet (3) and the rocker arm (4) as a working surface, or the support block (2) at the cylinder exhaust valve hydraulic force The contact surface of the tappet (5) with the cam is the working surface, or the support block (2 the contact surface of the rocker arm (4) with the camshaft is the working surface, or the support block (2) in the diesel fuel injection pump cam (8) The contact surface of the roller (7) is the working surface.

2. An engine variable power valve control system according to claim 1, wherein: said cam groove (6) is disposed on a cam symmetry plane of the cam shaft in contact with the exhaust valve.

3. An engine variable power valve control system according to claim 1, wherein: said cam groove (6) is disposed on a cam symmetry plane in contact with the roller shaft.

4. The engine variable power valve control system according to claim 1, wherein: said support block (2) is a direct push type support block, driven by a hydraulic cylinder, a stepping motor, and a bidirectional electromagnet. .

5. The engine variable power valve control system according to claim 1, wherein: said valve-distributing mechanism is a rocker arm type gas distribution mechanism, and between the camshaft exhaust valve tappets (3), A support block (2) is installed between the exhaust valve hydraulic tappets (6) or between the rocker arms (4).

6. The engine variable power valve control system according to claim 1, wherein: said diesel fuel injection system is a mechanically controlled in-line fuel injection pump, and the fuel injection pump camshaft (8) and the roller (7) A support block (2) is installed between them.

7. An engine variable power valve control system according to claim 1, wherein: The engine variable power valve control system is implemented by when the engine speed detected by the sensor for measuring the engine speed is higher than the minimum fuel economy control speed, the voltage comparator outputs a high level, and the forward input of the simulator is high. Level, when the engine speed detected by the sensor is lower than the minimum fuel-saving control speed, the negative input of the simulator is low.

8. The engine 1 variable power valve control system according to claim 7, wherein: when the high level is high, the simulator starts to operate, so that the fuel injection system controls the engine to stop fuel injection.

9. An engine variable power valve control system according to claim 7, wherein: when said low level, the simulator stops operating, so that the fuel injection system controls the engine to normally inject fuel.