WO2015106669A1

WO2015106669A1 - Noiselessly started gasoline engine and starting method therefor

Info

Publication number: WO2015106669A1
Application number: PCT/CN2015/070561
Authority: WO
Inventors: 曲日
Original assignee: 曲日
Priority date: 2014-01-14
Filing date: 2015-01-13
Publication date: 2015-07-23
Also published as: CN103758671A

Abstract

A noiselessly started gasoline engine comprises an oil sprayer (4) and a sparking plug mounted in a combustion chamber. The oil sprayer (4) is connected to the output end of an oil spraying controller (5). The sparking plug is connected to the output end of an ignition controller (6). The input end of the oil spraying controller (5) is connected to the output end of an oil spraying control circuit. The oil spraying control circuit comprises an oil spraying AND gate circuit (IC1), and comprises an acting cylinder signal generator (S2) and an ignition signal generator both connected to the input end of the oil spraying AND gate circuit (IC1). The ignition signal generator comprises an ignition AND gate circuit (IC2), and comprise a starting signal sensor (S3), a crankshaft position sensor (S4) and a rotation speed sensor (S5) all connected to the input end of the ignition AND gate circuit (IC2). The input end of the ignition controller (6) is connected to the output end of a square signal generator (F). The input end of the square signal generator (F) is connected to the output end of the ignition signal generator. A flywheel is connected to the crankshaft of the engine. A movable magnet (2) is embedded in the outer rim of the flywheel. The static magnet (3) is fixed mounted in a position corresponding to the movable magnet (2). The movable magnet (2) and the static magnet (3) are opposite to each other at same poles. The engine can be started without a motor, is short in starting time and noiseless, and can save production cost of the motor and storage batteries. Also disclosed is a noiselessly starting method.

Description

Noiseless starting gasoline engine and starting method thereof

[0001] The present invention relates to a gasoline engine, and more particularly to a noiseless starting gasoline engine and a method of starting the same.

Background technique

[0002] In the existing gasoline engine, the motor and the gear transmission mechanism are used to drive the crankshaft to rotate to a certain speed, and then fuel or gas is injected into the engine and ignited through the spark plug, causing oil and gas combustion and pushing the piston to move. This kind of gasoline engine must be equipped with heavy motor and battery, which has high production cost, poor reliability, short practical life of the battery, high noise during the starting process and serious mechanical wear.

technical problem

[0003] An object of the present invention is to provide a noise-free starting gasoline engine that can be started without an electric motor and a starting method thereof. The fuel-cylinder or the gas is directly injected into the cylinder by using a specific crankshaft position of the working cylinder to drive the engine to start and start. Short, no noise, and can save motor and battery production costs.

Problem solution

Technical solution

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] The noise-free starting gasoline and gas engine of the present invention includes an engine block, a combustion chamber disposed in the engine block, an injector installed in the combustion chamber, and a spark plug, and the injector is connected to the fuel injection. An output end of the controller, the spark plug is connected to an output end of the ignition controller, a piston is installed in the engine block, the piston is connected to the crankshaft through a piston rod, and a flywheel is connected to the crankshaft, and the fuel injection is An input end of the controller is connected to an output end of the fuel injection control circuit, and the fuel injection control circuit includes an injection and a gate circuit, a work cylinder signal generator connected to the input end of the fuel injection and the gate circuit, and an ignition signal generator, The ignition signal generator includes an ignition and a gate circuit, an activation signal sensor connected to the input end of the ignition and the gate circuit, a crankshaft position sensor, and a rotational speed sensor; the input end of the ignition controller is connected to the output end of the square wave signal generator, the square The input end of the wave signal generator is connected to the output end of the ignition signal generator; the moving magnet is embedded on the outer edge of the flywheel, Fixedly mounted at a position corresponding to the moving magnet Fixed magnet.

[0006] The above-mentioned noise-free starting gasoline and gas engine starting method is as follows, the starting control circuit acquires a starting signal by activating a signal sensor, acquiring a crankshaft position signal through a crank position sensor, and collecting a crankshaft speed signal through a speed sensor, and performing a power cylinder signal generator Detecting whether it is currently a power cylinder. If the signals collected by the sensors meet the following conditions, the fuel injector is injected into the combustion chamber of the power cylinder to control the square wave signal generator to send an ignition signal to the ignition controller;

[0007] The crankshaft position of the working cylinder is between top dead center + 10 ° ± 1 ° to bottom dead center -15 ° ± 2 °;

[0008] The rotational speed sensor provides a rotational speed less than a specific value;

[0009] The start signal sensor acquires a start signal.

Advantageous effects of the invention

Beneficial effect

[0010] After adopting the above technical solution, the magnet mounted on the flywheel can make the power cylinder crankshaft avoid the dead angle of the top dead center when the engine is stopped, start the fuel injection and directly ignite the fuel into the cylinder, without starting the motor. Short start-up, no noise, and can save motor and battery production costs.

Brief description of the drawing

DRAWINGS

1 is an electrical schematic diagram of a start controller of an embodiment of the present invention.

2 is a schematic structural view of a flywheel.

BEST MODE FOR CARRYING OUT THE INVENTION

[0013] As shown in FIG. 1, the noise-free starting gasoline engine of the present invention includes an engine block, a combustion chamber disposed in the engine block, an injector 4 installed in the combustion chamber, and a spark plug, An injector 4 is connected to an output end of the fuel injection controller 5, the spark plug is connected to an output end of the ignition controller 6, a piston is mounted in the engine block, and the piston is connected to the crankshaft through a piston rod, A flywheel 1 is connected to the crankshaft, and an input end of the fuel injection controller 5 is connected to an output end of the fuel injection control circuit, and the fuel injection controller 5 is controlled by the fuel injection control circuit; the fuel injection control circuit includes fuel injection and The gate circuit IC1, the power cylinder signal generator S2 and the ignition signal generator connected to the input end of the fuel injection and gate circuit IC1, are only doing When the power cylinder signal generator S2 and the ignition signal generator both send out correct signals, the fuel injection control circuit sends out the fuel injection control signal. The ignition signal generator includes an ignition and gate circuit IC2, an activation signal sensor S3 connected to the input end of the ignition and gate circuit IC2, a crank position sensor S4, and a rotation speed sensor S5. The ignition signal is only generated if each sensor sends a correct signal. The generator sends an ignition signal to the next stage; the input of the ignition controller 6 is connected to the output of the square wave signal generator F, and the input of the square wave signal generator F is connected to the output of the ignition signal generator When the square wave signal generator F receives the ignition signal from the ignition controller 6, the square wave signal generator F continuously emits an ignition pulse of a specific frequency to ignite the spark plug of the power cylinder. A movable magnet 2 is fitted to the outer edge of the flywheel 1, and a fixed magnet 3 is fixedly attached to a position corresponding to the movable magnet 2. The moving magnet 2 and the fixed magnet 3 are opposite poles, and the moving magnet 2 is rotated to the position closest to the fixed magnet 3, and the crankshaft is located at the top dead center position. Thus, the principle of the same polarity repelling of the magnet can be used after the engine is stopped. The cylinder of the power cylinder is used to avoid the top dead center, so as to facilitate the smooth start.

[0014] The above-mentioned method for starting the noise-free starting gasoline engine is as follows: The control circuit acquires the start signal through the start signal sensor S3, collects the crank position signal through the crank position sensor S4, collects the crank speed signal through the speed sensor S 5, and performs the power cylinder signal The generator S2 detects whether it is currently a power cylinder. The start signal can be directly collected from the ignition switch or from the throttle pull; the crank position sensor S 4 can be a Hall sensor, a photoelectric sensor or other sensor capable of detecting the rotational position of the crankshaft; the crankshaft speed signal can be derived from the engine speed Table or crankshaft speed signal; The power cylinder signal generator S2 can use an independent sensor to generate the power cylinder signal, or can use the signal generated by multiple crank position sensors to convert or calculate the power cylinder signal.

[0015] If the signals collected by the sensors meet the following conditions, the fuel injector 4 is injected into the combustion chamber of the power cylinder to inject the fuel to the control square wave signal generator F to issue an ignition signal to the ignition controller 6;

[0016] The crankshaft position of the working cylinder is between top dead center + 10°±1° to bottom dead center -15°±2°;

[0017] The speed sensor S5 provides a speed less than a set value, and the speed specific value can be determined as an idle speed or slightly higher than the idle engine speed to ensure that the engine has entered normal operation;

[0018] The start signal sensor S3 collects an enable signal.

Industrial applicability

[0019] The present invention uses a fuel injector, a spark plug, an ignition coil, an ECU, and the like of an existing gasoline engine, and an ECU Add the startup program. Compared with the traditional design, it has the following advantages: Reduced cost, reduced fuel consumption, reduced weight, reduced engine emissions, lower carbon, and more environmentally friendly. The biggest advantage is that there is no motion friction mechanism, which improves reliability and eliminates radio interference. The fuel gas explosive power is much larger than the traditional starter power, and the start-up time is shorter.

[0020] Starting 吋, the crankshaft position sensor S4 acquires a signal of a top dead center of the power cylinder + 10°±1° to a bottom dead center of -15°±2°, and the range directly injects fuel or gas at any angle, Ignition, conventional ignition is a single pulse, and the present invention uses a 1 KHZ rectangular pulse signal for continuous ignition to ensure its reliability. Pushing the piston down rapidly, the speed is greater than or equal to 1.1_1.2 times the rated idle speed. The same program that stops the start-up procedure is transferred to the normal working procedure and controlled by the ECU. When the engine rotation speed has not reached 1.1_1.2 times of the idle speed, the next input cylinder continues to execute the startup procedure.

[0021] The engine is turned off, the electric ignition four-cylinder engine, one of the cylinder pistons must stop at the top end of the power stroke +

10 ° ± 1 ° to the bottom dead center -15 ° ± 2 ° range, taking into account the human cause or the special case of forced stop at the top dead center due to improper operation, specially set three curved NdFeB permanent magnets, two The moving magnets are respectively mounted at 180 degrees opposite to the edge of the flywheel, and the other fixed magnet is mounted at a fixed position such as the frame, so that the same poles of the moving magnet and the fixed magnet are opposite each other, and the principle of repelling the same polarity of the magnet is used to make the power stroke From top dead center + 10° ± 1° to bottom dead center -15 ° ± 2 °, the piston stops within the range that meets the start-up requirements, ready for the next start.

Claims

Claim

[Claim 1] A noiseless start gasoline engine including an engine block, a combustion chamber disposed in an engine block, an injector (4) installed in a combustion chamber, and a spark plug, the injector

(4) connected to the output end of the fuel injection controller (5), the spark plug is connected to the output end of the ignition controller (6), the piston is mounted in the engine block, and the piston is connected to the crankshaft through the piston rod a flywheel (1) is connected to the crankshaft, wherein: an input end of the fuel injection controller (5) is connected to an output end of the fuel injection control circuit, and the fuel injection control circuit includes a fuel injection and a gate circuit (IC1), a power cylinder signal generator (S2) connected to the input of the fuel injection and gate circuit (IC1) and an ignition signal generator, the ignition signal generator including an ignition and gate circuit (IC2), connected to the ignition and the gate Start signal sensor (S3) at the input of the circuit (IC2), crankshaft position sensor

(S4), the rotational speed sensor (S5); the input end of the ignition controller (6) is connected to the output end of the square wave signal generator (F), and the input end of the square wave signal generator (F) is connected to the ignition An output end of the signal generator; a movable magnet (2) is embedded on the outer edge of the flywheel (1), and a fixed magnet (3) is fixedly mounted at a position corresponding to the movable magnet (2).

[Claim 2] The method for starting a noise-free starting gasoline engine according to claim 1, wherein the steps are as follows: The control circuit acquires the start signal through the start signal sensor (S3), and acquires the crank position through the crank position sensor (S4). The signal, the crankshaft speed signal is collected by the speed sensor (S5), and the power cylinder signal generator (S2) is used to detect whether it is currently a power cylinder. If the signals collected by the sensors meet the following conditions, the fuel injector (4) is controlled. The fuel cell is injected into the combustion chamber of the power cylinder to control the square wave signal generator (F) to issue an ignition signal to the ignition controller (6);

The crankshaft position of the power cylinder is between top dead center + 10°±1° to bottom dead center -15°±2°; the speed sensor (S5) provides the speed less than the set value; the start signal sensor (S3) collects the start signal .