Electronic control pressure relief type electronic control fuel system
A fuel system, high-pressure fuel technology, applied in charging systems, fuel injection devices, engine components, etc., to achieve the effect of improving stability, flexibility and reliability
Pending Publication Date: 2021-07-09
WUXI WEIFU HIGH TECH CO LTD
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Problems solved by technology
[0003] The invention provides an electronically controlled pressure relief type electronically controlled fuel system, which solves the problem in the related art that the electronically controlled pressure relief of the high pressure fuel rail cannot be realized
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[0018] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.
[0019] In order to enable those skilled in the art to better understand the solutions of the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only Embodiments of some, but not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.
[0020] It should be noted that the terms "f...
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The invention relates to the technical field of diesel engine electric control system control, and particularly discloses an electric control pressure relief type electric control fuel system. The system comprises a high-pressure fuel supply pump assembly, a high-pressure fuel rail assembly, a fuel injector assembly and an electric control unit assembly, wherein the high-pressure fuel supply pump assembly is connected to an oil tank, the high-pressure oil rail assembly comprises a first high-pressure oil rail and a second high-pressure oil rail, the first high-pressure oil rail is connected with the second high-pressure oil rail, an electric control pressure release valve is arranged at one end of the first high-pressure oil rail, and a mechanical pressure limiting valve is arranged at one end of the second high-pressure oil rail. The electric control pressure release valve can control the rail pressure of the high-pressure oil rail assembly under the control of the electric control unit assembly, and the mechanical pressure limiting valve can be switched on when the rail pressure in the first high-pressure oil rail and / or the second high-pressure oil rail exceeds a preset limit value. According to the electronic control pressure relief type electronic control fuel system, the most reasonable rail pressure control mode can be adopted under different engine working conditions, and the working stability of the electronic control fuel system and an engine is greatly improved.
Description
technical field [0001] The invention relates to the technical field of diesel engine electronic control system control, in particular to an electronically controlled pressure relief type electronically controlled fuel system. Background technique [0002] Most of the existing marine common rail technologies are directly applied to vehicle-engine common rail technology, but vehicle common rail technology has problems such as poor applicability, poor safety, and high development costs when used in marine diesel engines. The fuel system of a 6-cylinder marine engine usually uses a single fuel rail and integrates a mechanical pressure limiting valve and an electronically controlled pressure relief valve for rail pressure control. The development cost continues to increase, and it is not conducive to the expansion to 8-cylinder and 12-cylinder engine systems. In addition, most of the current electronically controlled pressure relief valves adopt open-loop control, which cannot b...
Claims
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Patent Timeline
Login to View More IPC IPC(8): F02M55/02F02M63/02F02M63/00
CPCF02M55/025F02M63/0014F02M63/0015F02M63/005F02M63/023F02M63/0285
Inventor 王毅博徐云峰杨晓陈瑞
Owner WUXI WEIFU HIGH TECH CO LTD