Currently Motorcycle engine devices are used in internal combustion machine.

combustion machine. People accustomed to the use of diesel fuel is called the diesel engine, while the use of gasoline-fueled engine is said to gasoline. Because gasoline engine with a light weight, small size, noise, vibration, start easy and low cost motorcycle engine size advantages, so widely used motorcycle Motorcycle engine gasoline engine as its power plant. "Engine" can be understood literally as mechanical generate power, depending on changes in the way energy can be divided into electric machine (power → mechanical energy), hydraulic machine (water → mechanical energy), wind turbine (wind → mechanical energy), Atomic engine (Atomic Energy → mechanical energy), heat machine (heat → mechanical energy) and so on. Heat can be divided into an external combustion machines with internal combustion motorcycle engine that thermodynamic machine. Motorcycle engine is to enter the cylinder to ignite the air-fuel mixture so that the thermal energy generated by combustion into mechanical energy, by the vehicle driving force becomes the crankshaft and the mechanical power to the rear wheels through a transmission mechanism electric motorcycle motor motorcycle. Engines rushed for two engines and four-stroke engines. Two-stroke engines: Where the engine crankshaft rotation of a turn each, that under the reciprocating motion of the piston under two stroke and complete a work cycle engines. Four-stroke engine: Where rotate every two revolutions of the engine crankshaft, pistons that move up and down reciprocating the completion of a four stroke cycle engine work

High-speed black smoke

Symptoms for more than four or five thousand rpm the exhaust pipe smoke clear, vehicle speed power is clearly insufficient. Fault: (1) air filter or clogged air intake passage; (2) main jet cross-sectional area is too large; (3) the main nozzle hole and needle with too much space; (4) the oil level is too high. Solution: (1) clean or replace the air filter paper Filter; (2) replacement of small cross-sectional area of the main jet. Here to talk about the disassembly and adjustment of the carburetor. First remove the carburetor and air filter, clean or replace the filter filter, open the carburetor main jet cleaning inspection, pilot jet, the electric motorcycle motor amount of air holes, adjust the float chamber oil level to normal, the oil needle transferred last card of a cell, and then refitted the carburetor and air filter, start the vehicle, the car preheat 2min-3min, plunger height adjustment screw to adjust the idle speed minimum, and then adjust the idle air screw to adjust the engine speed up , and then to adjust the idle speed adjustment screw plunger minimum, and then adjust the idle air motorcycle engine types adjusting screw to speed up, repeatedly adjusted several times, until the lowest position of the plunger, and the engine speed up and running smoothly, that is adjusted to the optimum position. Slow fuel door, the engine speed should be smooth rise, the throttle should be no sense in any block opening, otherwise the needle to remove the card downward adjustments until satisfied.

Idle black smoke

Failure phenomenon: When idling vehicle exhaust pipe smoke clear, exhaust sound dull (sometimes wonder electric motorcycle motor muffler damage), we must increase the throttle to start to start. Reasons for failure are: (a) pilot jet is too large; (2) float chamber oil is too high; (3) Start enriched valve is not closed; (4) with the gap needle and main jet hole is too large.

Here is the solution: (1) replacing the smaller pilot jet. (2) adjust the float height, observed two-fifths of the oil level is normal oil level float chamber to the float chamber (note, open the lid when viewed under the oil level, the carburetor must be upright, to prevent the gasoline spread out, causing the oil level is not accurate judgment). (3) There are three start-enriched valve forms: manual plunger enriched valve, vacuum diaphragm plunger enriched valve, electric valve plunger enriched. Manual motorcycle engine types plunger valve repair enriched relatively simple, clean plunger through replacement return spring or cable solve the problem. Vacuum diaphragm check valve is mainly concentrated column Saiga vacuum, vacuum diaphragm rupture, leak. Electric plunger valve is usually enriched electrical heating element damage and power line failures, electrical heating element is damaged and must be replaced. (4) Oil needle and main jet holes with the gap is too large to be replaced standards for new accessories.