Low-speed diesel engine electronically controlled high-pressure oil pump

A high-pressure oil pump and diesel engine technology, applied in electrical control, engine control, pumps, etc., can solve the problems of inaccurate injection control, slow response speed, insufficient injection pressure, etc., and achieve good fuel atomization and large injection volume , The effect of reducing carbon smoke emissions
CN111648889BActive Publication Date: 2021-08-27TIANJIN UNIV
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Patent Information

Authority / Receiving Office
CN ยท China
Current Assignee / Owner
TIANJIN UNIV
Publication Date
2021-08-27

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Abstract

The present disclosure provides an electronically controlled high-pressure oil pump for a low-speed diesel engine, including: a fuel booster unit, including a sleeve and a plunger cooperating therein, for performing piston movement to realize fuel intake and pressurized discharge; a hydraulic drive unit, Screwed with the fuel booster unit, used to drive the plunger movement; and the cylinder electronic control unit, used to receive and send electrical signals, to the process of driving the plunger for the hydraulic drive unit and the intake and discharge of the fuel booster unit The process of fuel is controlled; the fuel booster unit is provided with a fuel inlet, an oil inlet channel, an oil discharge channel and a fuel outlet.
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Description

technical field

[0001] The present disclosure relates to the technical field of engine fuel systems, in particular to an electronically controlled high-pressure oil pump for a low-speed diesel engine. Background technique

[0002] Large low-speed two-stroke diesel engines are the most widely used engine types on ships. The fuel system is directly related to the combustion quality, economy and emission of the engine, and the high-pressure oil pump is the core component of the fuel system.

[0003] The high-pressure oil pump of a low-speed two-stroke diesel engine has the characteristics of large volume, low plunger speed, and low-quality fuel as the working medium. The speed changes, especially at low speeds, the high-pressure oil pump has low oil discharge pressure and poor fuel atomization; the fuel injection timing driven by the high-pressure oil pump cannot be precisely controlled; 2. The high-pressure oil pump has a large volume and weight, large inertia of moving parts,...

Claims

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