CN203655511U

CN203655511U - Noiseless starting diesel engine

Info

Publication number: CN203655511U
Application number: CN201420020411.2U
Authority: CN
Inventors: 曲日; 曲超
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-01-14
Filing date: 2014-01-14
Publication date: 2014-06-18
Anticipated expiration: 2024-01-14

Abstract

The utility model relates to a diesel engine, in particular to a noiseless starting diesel engine and a starting method thereof. The engine comprises an engine cylinder body, a combustion chamber arranged in the engine cylinder body and an oil injector and a sparking plug which are installed in the combustion chamber. The oil injector is connected with the output end of an oil injection controller, the sparking plug is connected with the output end of an ignition controller, a piston is installed in the engine cylinder body, the piston is connected with a crank shaft through a piston rod, a fly wheel is connected onto the crank shaft, and the input end of the oil injection controller is connected with the output end of an oil injection control circuit. The oil injection control circuit comprises an oil injection and gate circuit and an acting cylinder signal generator and an ignition signal generator which are connected at the input end of the oil injection and gate circuit. The ignition signal generator comprises an ignition and gate circuit and a starting signal sensor, a crank shaft position sensor and a rotating speed sensor which are connected at the input end of the ignition and gate circuit. The input end of the ignition controller is connected with the output end of a square signal generator, the input end of the square signal generator is connected with the output end of the ignition signal generator, a movable magnet is embedded in the outer edge of the fly wheel, and a fixed magnet is fixedly installed at the position corresponding to the movable magnet. A motor is not required in starting of the engine, the starting time is short, noiseless starting is achieved, and production cost of the motor and a storage battery can be saved.

Description

Noiseless starts diesel engine

Technical field

The utility model relates to a kind of diesel engine, is that a kind of noiseless starts diesel engine specifically.

Background technique

When existing diesel engine starts, all to utilize motor and gear drive to drive crankshaft rotating to treat that piston reaches top dead center, then to jet atomization diesel oil in motor, be employing compression-ignition, cause mixture combustion, promote piston movement.Motor and the storage battery of the necessary supporting heaviness of this diesel engine, cost of production is high, poor reliability, and the physical life of storage battery is short, and in start-up course, noise is large, mechanical wear is serious.

Summary of the invention

It is that bootable noiseless starts diesel engine without motor that the purpose of this utility model is to provide a kind of, utilize the specific crank position of acting cylinder directly to light a fire to in-cylinder injection gasoline, promote engine start, starting time, short, noise free, and can save the cost of production of motor and storage battery.

For achieving the above object, the utility model adopts following technological scheme:

Noiseless described in the utility model starts diesel engine and comprises engine cylinder-body, be arranged on the firing chamber in engine cylinder-body, be arranged on the diesel injector in firing chamber, in described engine cylinder-body, piston is installed, described piston is connected with bent axle by piston rod, gasoline ejector and spark plug are also installed in described firing chamber, described gasoline ejector is connected to the output terminal of injector controller, described spark plug is connected to the output terminal of ignition controler, on described bent axle, be connected with flywheel, the input end of described injector controller is connected to the output terminal of fuel injection control circuit, described fuel injection control circuit comprises oil spout AND circuit, be connected to acting cylinder signal generator and the signal generator for ignition of oil spout AND circuit input end, described signal generator for ignition comprises igniting AND circuit, be connected to the actuating signal sensor of igniting AND circuit input end, crankshaft position sensor, speed probe, the output terminal of the input end connecting part wave generator of described ignition controler, the input end of described square wave signal generator is connected to the output terminal of signal generator for ignition, in the outer rim of described flywheel, be embedded with moving magnet, be installed with fixed magnet in the position corresponding with moving magnet.

The starting method of above-mentioned noiseless startup diesel engine is as follows, starting control circuit is gathered actuating signal, passes through crankshaft position sensor collecting crankshaft position signal, is passed through speed probe collecting crankshaft tach signal by actuating signal sensor, whether detect current by acting cylinder signal generator is acting cylinder, if the signal of each sensor collection meets the following conditions simultaneously, control gasoline ejector to acting spray in cylinder firing chamber fuel oil simultaneously controlling party wave generator send fire signal to ignition controler;

Acting cylinder crankshaft position is between top dead center+10 ° ± 1 ° to lower dead center-15 ° ± 2 °;

The rotating speed that speed probe provides is less than particular value;

Actuating signal sensor collects actuating signal.

Adopt after technique scheme; be arranged on magnet on the flywheel cylinder crankshaft that can make to do work and avoid the dead angle of top dead center in engine shutdown; when startup directly to in-cylinder injection fuel oil and light and start; without motor start-up; starting time, short, noise free, and can save the cost of production of motor and storage battery.

Brief description of the drawings

Fig. 1 is the electrical schematic diagram of an embodiment's of the utility model startup controller.

Fig. 2 is the structural representation of flywheel.

Fig. 3 is the structure principle chart of an embodiment's of the utility model diesel engine.

Embodiment

As shown in Figure 3, noiseless described in the utility model starts diesel engine and comprises engine cylinder-body, is arranged on firing chamber in engine cylinder-body, is arranged on the diesel injector 41 in firing chamber, in described engine cylinder-body, piston is installed, described piston is connected with bent axle by piston rod, and gasoline ejector 4 and spark plug 42 are also installed in described firing chamber.

As shown in Figure 1, described gasoline ejector 4 is connected to the output terminal of injector controller 5, described spark plug 42 is connected to the output terminal of ignition controler 6, on described bent axle, be connected with flywheel 1, the input end of described injector controller 5 is connected to the output terminal of fuel injection control circuit, utilizes fuel injection control circuit control injector controller 5 to work; Described fuel injection control circuit comprises oil spout AND circuit IC1, is connected to acting cylinder signal generator S2 and the signal generator for ignition of oil spout AND circuit IC1 input end, only, in the situation that do work cylinder signal generator S2 and signal generator for ignition all send correct signal, fuel injection control circuit just sends fuel injector control signal.Described signal generator for ignition comprises igniting AND circuit IC2, is connected to actuating signal sensor S3, crankshaft position sensor S4, the speed probe S5 of igniting AND circuit IC2 input end, only, in the situation that each sensor all sends correct signal, signal generator for ignition just sends fire signal to next stage; The output terminal of the input end connecting part wave generator F of described ignition controler 6, the input end of described square wave signal generator F is connected to the output terminal of signal generator for ignition, in the time that square wave signal generator F receives the fire signal that ignition controler 6 sends, square wave signal generator F sends the firing pulse of characteristic frequency continuously, and cylinder plug ignition makes to do work.In the outer rim of described flywheel 1, be embedded with moving magnet 2, be installed with fixed magnet 3 in the position corresponding with moving magnet 2.Moving magnet 2 is relative with fixed magnet 3 homopolarities; and make moving magnet 2 turn to bent axle when approaching fixed magnet 3 position most and be positioned at top dead center position, like this, utilize the principle of magnet two like magnetic poles repel each other; the cylinder crankshaft that can make to do work after engine shutdown is avoided top dead center, so that start smoothly.

The starting method of above-mentioned noiseless startup diesel engine is as follows: control circuit is gathered actuating signal, passes through crankshaft position sensor S4 collecting crankshaft position signal, passed through speed probe S5 collecting crankshaft tach signal by actuating signal sensor S3, and whether detect current by the cylinder signal generator S2 that does work is acting cylinder.Actuating signal can directly gather from ignition switch, also can come from acceleration cable switch; Crankshaft position sensor S4 can be the sensor that Hall transducer, photoelectric sensor or other can detect crankshaft rotating position; Speed of crankshaft signal can be from engine speed indicator or speed of crankshaft signal; Acting cylinder signal generator S2 can adopt independently sensor to produce acting cylinder signal, also can utilize the signal process circuit conversion of multiple crankshaft position sensors generations or calculate acting cylinder signal.

If the signal of each sensor collection meets the following conditions simultaneously, control gasoline ejector 4 to acting spray in cylinder firing chamber atomization gas simultaneously controlling party wave generator F send fire signal to ignition controler 6;

The rotating speed that speed probe S5 provides is less than setting value, and this rotating speed particular value can be defined as idling or the engine speed a little more than idling, guarantees that motor has entered normal operation;

Actuating signal sensor S3 collects actuating signal.

The utility model uses the mechanism such as oil sprayer, ECU of existing diesel engine, increases start-up routine in ECU.Relatively there is following advantage with traditional design: reduce cost, reduced oil consumption, alleviated weight, reduce motor discharge, more low-carbon (LC), more environmental protection, sharpest edges are without any kinetic friction parts, have improved reliability, have eliminated radio interference.Fuel-firing gas-firing explosive force is much larger than traditional starter motor power, and starting time is shorter.

When startup, by crankshaft position sensor S4 obtain top dead center+10 ° of acting cylinder ± 1 ° to lower dead center-15 ° ± signal of 2 °, the arbitrarily angled inner direct gasoline of this scope, igniting simultaneously, conventional igniting is monopulse, and the utility model uses 1KHZ rectangular pulse signal to carry out continuous ignition for ensureing its reliability.Promote piston descending rapidly, when rotating speed is more than or equal to 1.1-1.2 times of specified idling, when stopping start-up routine, proceeds to normal working procedure and be subject to ECU to control igniting.Engine speed do not reach 1.1-1.2 times of idling the next one enter acting cylinder and continue to carry out start-up routine.

When engine misses electric ignition four cylinder engine wherein a cylinder piston be necessarily parked within the scope of expansion stroke top dead center+10 ° ± 1 ° to lower dead center-15 ° ± 2 °, consider artificial origin or force to be parked in the special circumstances of top dead center because of misoperation, three arc neodymium-iron-boron permanent magnets are set especially, two moving magnets are inlaid in respectively flywheel edge 180 and spend relative position, another piece fixed magnet is arranged on the fixing positions such as frame, make the homopolarity of moving magnet and fixed magnet relative, utilize the principle of magnet two like magnetic poles repel each other to make to avoid within the scope of expansion stroke top dead center+10 ° ± 1 ° to lower dead center-15 ° ± 2 °, piston is parked in to meet and starts in the scope requiring, prepare for starting next time.

Claims

1. noiseless starts diesel engine, comprise engine cylinder-body, be arranged on the firing chamber in engine cylinder-body, be arranged on the diesel injector (41) in firing chamber, in described engine cylinder-body, piston is installed, described piston is connected with bent axle by piston rod, it is characterized in that: gasoline ejector (4) and spark plug (42) are also installed in described firing chamber, described gasoline ejector (4) is connected to the output terminal of injector controller (5), described spark plug (42) is connected to the output terminal of ignition controler (6), on described bent axle, be connected with flywheel (1), the input end of described injector controller (5) is connected to the output terminal of fuel injection control circuit, described fuel injection control circuit comprises oil spout AND circuit (IC1), be connected to acting cylinder signal generator (S2) and the signal generator for ignition of oil spout AND circuit (IC1) input end, described signal generator for ignition comprises igniting AND circuit (IC2), be connected to the actuating signal sensor (S3) of igniting AND circuit (IC2) input end, crankshaft position sensor (S4), speed probe (S5), the output terminal of the input end connecting part wave generator (F) of described ignition controler (6), the input end of described square wave signal generator (F) is connected to the output terminal of signal generator for ignition, in the outer rim of described flywheel (1), be embedded with moving magnet (2), be installed with fixed magnet (3) in the position corresponding with moving magnet (2).