Low-pressure fuel delivery pump for high-power fuel system
A technology of fuel system and delivery pump, which is applied in the direction of charging system, rotary piston type/oscillating piston type pump components, pumps, etc. It can solve the problem of small flow rate, low pressure of low-pressure fuel oil, and cannot meet the requirements of electronically controlled single pumps. and other problems, to achieve the effect of convenient installation, guaranteed power usage requirements, and compact structure
Pending Publication Date: 2022-08-05
HEBEI HUABEI DIESEL ENGINE
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Problems solved by technology
[0003] The traditional in-line pump integrated low-pressure fuel pump structure outputs low-pressure fuel with low pressure and small flow, which cannot meet the requirements of the electronically controlled single pump.
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[0035] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0036] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments;
[0037] The principle of the fuel system of the electronically controlled unit pump: Diesel is fed into the crude fuel filter from the diesel tank through the die...
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The invention relates to the technical field of fuel oil delivery pumps, in particular to a low-pressure fuel oil delivery pump for a high-power fuel oil system, which is characterized in that diesel oil in an oil tank enters a pump cover 5 through a coarse filter, is input into a fuel oil fine filter through the pump cover 5 at constant pressure, and is delivered to a monoblock pump through the fuel oil fine filter, the monoblock pump is connected with a one-way valve, and the one-way valve is connected with the oil tank through an oil pipe. A pressure release valve and a one-way valve are arranged in an inner cavity of the pump cover 5, a gear pump is arranged in an inner cavity of the pump body 11, and the pump cover 5 is attached to the pump body 11 in a matched mode through an O-shaped ring 6 and fixed in a sealed mode. The design of the low-pressure fuel delivery pump is completed in a limited space, the pump is small in size, compact in structure and convenient and fast to install, and the use requirement for the power of a diesel engine is met.
Description
technical field [0001] The invention relates to the technical field of fuel delivery pumps, in particular to a low-pressure fuel delivery pump used in a high-power fuel system. Background technique [0002] The low-pressure oil transfer pump used in the traditional diesel engine in-line pump oil supply system is generally integrated on the high-pressure pump and belongs to the plunger type. It can establish the primary oil pressure for the high-pressure oil pump, and transport the diesel oil from the oil tank to the high-pressure oil pump through the oil pipe. The hydraulic pressure of about 0.15MPa is output. Its working principle is that at the end of the oil pump plunger compression, an oil inlet valve and an oil outlet valve are designed. These two oil valves are one-way oil valves with different functions. The oil pump plunger moves upward under the action of the spring. A vacuum is formed away from the bottom end of the plunger. At this time, the oil inlet valve is op...
Claims
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IPC IPC(8): F02M37/04F02M37/14F04C2/18F04C14/24F04C15/00F04C15/06G06F30/17G06F30/20
CPCF02M37/041F02M37/14F04C2/18F04C15/00F04C15/066F04C14/24G06F30/17G06F30/20
Inventor 赵祎谌继南谢亮王中庆黄兰杰赵伟程高鹏飞刘英华李文涛刘永梅
Owner HEBEI HUABEI DIESEL ENGINE