Phase difference transmission system of engine fuel injection pump

Abstract

The invention provides a phase difference transmission system of an engine fuel injection pump. The phase difference transmission system used for controlling the fuel injection time of the fuel injection pump comprises a shell, a clutch flange, a spindle adapter, a spindle flange, a planet gear rack, an eccentric wheel and a connecting rod. A planet gear mechanism is disposed on the clutch flange. An eccentric mechanism is disposed between the planet gear mechanism and the spindle adapter. The ratio of the tooth number of an inner tooth gear ring to that of a planet gear is n which equals to the number of the cylinder bodies of the fuel injection pump. By the phase difference transmission system mounted between the power input end and the cam shaft of the fuel injection pump, the fuel injection efficiency of the fuel injection pump can be controlled, fuel combustion rate of the engine is then increased, emission and pollution are reduced, and the output power of the engine is increased.

Description

technical field [0001] The invention relates to an engine fuel injection pump, in particular to a phase difference transmission system of the engine fuel injection pump. Background technique [0002] Fuel injection pump is an important part of automobile diesel engine. The fuel injection pump assembly is usually a whole composed of fuel injection pump, governor and other components installed together. Among them, the governor is a component that guarantees the low-speed operation of the diesel engine and limits the maximum speed, and ensures a certain relationship between the injection volume and the speed. The fuel injection pump is the most important part of the diesel engine and is regarded as the "heart" part of the diesel engine. Once it goes wrong, the entire diesel engine will malfunction. The key part of the fuel injection pump is the plunger. A spring is installed at one end of the plunger, and the other end of the plunger contacts the camshaft. When the camshaft ...

AI Technical Summary

Problems solved by technology

There is an inclined groove on the body of the plunger, and a small hole on the plunger sleeve is called a suction port. This suction port is filled with diesel oil. When the inclined groove of the plunger faces the suction port, the diesel oil enters the plunger sleeve, and the plunger is driven by the camshaft. When the plunger reaches a certain height, the inclined groove of the plunger is staggered from the suction port, and the suction port is closed, so that the diesel oil can neither be sucked in nor pressed out. When the plunger continues to rise, it presses the diesel oil. The valve goes out into the fuel injector, and then enters the cylinder combustion chamber from the fuel injector. Because the angular velocity of the traditional camshaft is constant, the opening time of the fuel outlet valve opened by the plunger is too slow, resulting in incomplete combustion of diesel oil. , causing waste and pollution

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