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.

Leakage fault performance for two phenomena

A quick oil spills. Fast overflow pipe leakage phenomenon, sometimes also fast on balance pipe leak, causing electric scooter motor the fuel into the engine combustion chamber, cylinder vehicles flooded, will not start. Cause more for: (a) a larger dirt stuck float chamber; (2) float spill damage; (3) on the float float dysfunctional pins. The solution is: clean float needle and into the oil pipeline, the float can be replaced if damaged, can also be thrown out after the float in gasoline knot with a soldering iron. 2, slow permeability. Phenomenon for several hours after a motorcycle parked a few drop of the overflow pipe to the frequency of the slow drip. Failure to float needle or float needle seat is damaged, resulting in Mifengbuyan. The solution is: replace qualified float needle and needle seat assembly, for non-replaceable tight inlaid with casting type float needle seat, only replace the rubber head float needle. Replace the float needle still can not rule out the failure, you have to repair the float needle seat repair device. Repair is available 42 # steel rod production, the lathe is slightly thinner motorcycle engine types than the float needle into the hole seat, the top of the conical taper should be less than the original float needle taper. After completion of the processing  must be polished with a cloth top, the top of the repair device into the float needle seat, with a lower number of wooden hammer tapping, then refitted float and float needle, insert tubing, open the oil switch, the carburetor upside down , after more than 10 minutes to see the needle seat with oil leaking, repair is normal. Repair generally make jh70 type, wh125 type two can repair can be reused.

Motorcycle history

1885, Lieber Gott German Daimler will install an engine with a framework of the machine, the world's first motorcycle was born. Therefore, the motorcycle Lieber Gott by German Daimler's invention electric motorcycle scooter in 1885. Associated with the motorcycle is a motorcycle sport is one of the military sports. Motorcycle as a competitive sport appliance. Points two and three two models, each model according to the engine cylinder capacity of integration work several levels. Forms can be divided according to race motocross, multi-day race, road race, race track race and travel and other items. To driving speed or driving skills assessment. Motorcycle, driven by a gasoline engine, front-wheel steering by hand manipulating two or tricycle, light and flexible, with rapid, widely used in patrol, passenger and freight transport, but also for sports equipment. From the big direction, the motorcycle into a street car, motorcycle road racing, off-road motorcycle, cruising cars, station wagons and so on. 1885, Lieber Gott German Daimler will install an engine with a framework of the machine, the world's first electric motorcycle motor motorcycle was born. Therefore, the motorcycle Lieber Gott by German Daimler's invention in 1885. Associated with the motorcycle is a motorcycle sport is one of the military sports. Motorcycle as a competitive sport appliance. Points two and three two models, each model according to the engine cylinder capacity of integration work several levels. Forms can be divided according to race motocross, multi-day race, road race, race track race and travel and other items. To driving speed or driving skills assessment ranking.

Leakage fault performance for two phenomena

A quick oil spills. Fast overflow pipe leakage phenomenon, sometimes also fast on balance pipe leak, causing the fuel into the engine combustion chamber, cylinder vehicles flooded, will not start. Cause more for: (a) a larger dirt stuck float chamber; (2) float spill damage; (3) on the float float dysfunctional pins. The solution is: clean float needle and into the oil pipeline, the float can be replaced if damaged, can Triumph tiger cub motorcycle also be thrown out after the float in gasoline knot with a soldering iron. 2, slow permeability. Phenomenon for several hours after a motorcycle parked a few drop of the overflow pipe to the frequency of the slow drip. Failure to float needle or float needle seat is damaged, resulting in Mifengbuyan. The solution is: replace qualified float needle and needle seat assembly, for non-replaceable tight electric motorcycle motor inlaid with casting type float needle seat, only replace the rubber head float needle. Replace the float needle still can not rule out the failure, you have to repair the float needle seat repair device. Repair is available 42 # steel rod production, the lathe is slightly thinner than the float needle into the hole seat, the top of the conical taper should be less than the original float needle taper. After completion of the processing must be polished with a cloth top, the top of the repair device into the float needle seat, with a lower number of wooden hammer tapping, then refitted float and float needle, insert tubing, open the oil switch, the carburetor upside down , after more than 10 minutes to see the needle seat with oil leaking, repair is normal. Repair generally make jh70 type, wh125 type two can repair can be reused.

Black smoke fault repair

It was the image of the motorcycle carburetor likened stomach, digestion and absorption is good, good or bad depending on the stomach, black smoke is kind of the performance of indigestion, diarrhea, and people motorcycle engine parts almost (sometimes black smoke and ignition failure abnormal or valve leakage, excessive wear cam related article discussed only carburetor malfunction, not to mention other skip). Mainly due to the mixture is too thick, black smoke of vehicle gasoline consumption, often damaged spark plug, the sound muffled, speed weakness. Idle black smoke, fault phenomenon: When idling vehicle exhaust pipe smoke clear, exhaust motorcycle parts sound dull (sometimes wonder 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 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.