Oil limiter of diesel engine

Abstract

The invention discloses an oil limiter of a diesel engine, wherein an adjusting seat is provided with a mounting through hole along the axial direction; an adjusting rod, a push rod and a limit ring are sequentially arranged in the mounting through hole from left to right, wherein the limit ring is fixed at the right end of the mounting through hole, the left part of the adjusting rod extends out of the mounting through hole, the right part of the adjusting rod is blocked in the mounting through hole and supports against the left end of the push rod, the left part of the push rod is positioned in the mounting through hole, the right part of the push rod extends out of the mounting through hole, and the right part of the push rod is fixedly blocked on the limit ring at the right end of the mounting through hole; a return spring is sleeved on the push rod; the left end of the return spring supports against a limit disc which is arranged at the left end of the push rod and provided with an inclined surface; and the right end of the return spring supports against the limit ring. The oil limiter of the diesel engine has the capability of realizing two functions, such as easiness in starting and oil saving, namely oil mist concentration is increased and the ignition sensitivity is enhanced; and the oil limiter disclosed by the invention overcomes the defects of black smoke rising and the like caused by overlarge oil addition amount and insufficient combustion.

Description

technical field [0001] The invention belongs to the technical field of engines, in particular to an oil limiter for diesel engines. Background technique [0002] In order to meet the performance requirements of mobile diesel engines, a single-cylinder diesel engine needs to be installed with a fuel limiter, and the design needs to be reasonable, otherwise the diesel engine may not meet the power requirements required by the national standard, or the diesel engine may emit black smoke or exceed the emission requirements. The existing diesel engine originally had a fuel limiter, which is actually a speed stabilizer. When the diesel engine is running at a sudden load higher than the rated speed, it can reduce the amount of overspeed and improve the stability of the diesel engine. The stroke is large, so the calibration working condition cannot play the role of oil limit. For example, the current domestic sales of 186F and other diesel engines are mainly used for rotary tillers...

AI Technical Summary

Problems solved by technology

The existing diesel engine originally had a fuel limiter, which is actually a speed stabilizer. When the diesel engine is running at a sudden load higher than the rated speed, it can reduce the amount of overspeed and improve the stability of the diesel engine. The stroke is large, so the calibration condition cannot play the role of oil limit

For example, the current domestic sales of 186F and other diesel engines are mainly used for rotary tillers, tractors, and small construction machinery for mobile use. The original oil limiter cannot play the role of calibrated power limit. When the load increases during use, the fuel quantity shift fork operates according to the speed regulation characteristic under the action of the speed regulation spring force. When the full load is reached, the torque will continue to increase and the overload will continue to operate according to the speed regulation characteristic. The increase in fuel supply will cause the diesel engine to turn black. until the fuel supply increases too much, the black smoke billows and turns off, and the diesel engine cannot meet the national standard for diesel engine assessment requirements for mobile use. Therefore, in order to prevent the diesel engine from causing heavy smoke, high fuel consumption, and environmental pollution caused by overload operation, A well-designed oil limiter becomes necessary

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