Electric control oil injector of diesel engine

Abstract

The invention discloses an electric control oil injector of a diesel engine, belonging to the technical field of control for the diesel engine and comprising a mechanical oil injector. The electric control oil injector is characterized in that an oil passage of an oil injector on the mechanical oil injector is connected with an electromagnetic valve; an electromagnetic valve body of the electromagnetic valve is provided with a high-pressure oil passage and an oil leakage channel which are controlled by a valve core; the high-pressure oil passage is externally connected with a high-pressure oil pipe joint; the oil leakage channel is externally connected with an oil leakage pipe joint; and the high-pressure passage is in a three-way type, one way leads to the high-pressure oil pipe joint, another way leads to the direction of the valve core, and the third way is connected to the oil passage of the oil injector by an orifice. The electric control oil injector solves the urgent problem that how to realize electric control oil injection on the basis of the existing mechanical oil injection mode so as to improve the dynamic property and the discharge index of the existing diesel engine, and has the advantages of high response capability, high bearing capability, high control accuracy, simple structure, good universality, reliable working, long service life, low cost and convenient installation and the like.

Description

technical field [0001] The invention belongs to the technical field of diesel engine control, in particular to an electronically controlled diesel engine fuel injector. Background technique [0002] At present, on diesel engines, the fuel injection methods used mainly include mechanical fuel injection and electronically controlled fuel injection. The fuel injection process of the mechanical fuel injection method is completely controlled by a mechanical method. The fuel injector used is mainly composed of a fuel injector body, a fuel injector and a compression spring. This fuel injector cannot be applied to an electronically controlled diesel engine. The diesel engine adopts electronically controlled fuel injection method to better meet the diesel engine emission standards and improve performance indicators. The injection system of the EFI diesel engine consists of three parts: sensors, ECU (computer) and actuators. Its task is to electronically control the fuel injection s...

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Problems solved by technology

[0003] The structure of the above-mentioned electronically controlled injection system requires high control precision, complex structure, and high cost, which is difficult for general users to accept. How to realize electronically controlled fuel injection on the basis of the existing mechanical fuel injection method is the industry's commitment to improving the power of existing diesel engines. Urgent Issues of Sex and Emissions Indicators

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