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High pressure pump and method for compressing fluid

A fluid and compression chamber technology, which is applied to the components, pumps, and pump elements of pumping devices for elastic fluids, can solve problems such as dilution and contamination of fuel and lubricating oil, and achieve lower supply pressure, lower fuel consumption, and reduced The effect of fuel consumption

Active Publication Date: 2020-04-21
HYUNDAI MOTOR CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the plunger seals cause friction and wear of the plunger which results in contamination or dilution of the fuel with lubricating oil used on the cam side which is the cause of engine wear and injector carbon deposits

Method used

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  • High pressure pump and method for compressing fluid
  • High pressure pump and method for compressing fluid
  • High pressure pump and method for compressing fluid

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Embodiment Construction

[0033] Although specific embodiments have been shown and described herein, it will be appreciated by those skilled in the art that various alternatives and / or alternatives may be made to the specific embodiments shown and described without departing from the scope of the present disclosure. Equivalent implementation alternatives. In general, this application is intended to cover any adaptations or variations of the specific embodiments discussed herein.

[0034] According to the first embodiment, as Figure 1A to Figure 1F As shown, the high pressure pump 100 includes: a compression chamber 102 having an inlet 104 and an outlet 108, the inlet 104 being connected to a fluid supply to draw fluid 106; an inlet check valve 112 between the compression chamber 102 and the inlet 104; a digital inlet valve 114, between compression chamber 102 and inlet check valve 112; variable volume chamber 116, connected to compression chamber 102 via manifold 118 and digital inlet valve 114; and ...

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Abstract

A high pressure pump is disclosed. The high pressure pump comprises a compression chamber having an inlet for connecting to a fluid supply to intake a fluid, and an outlet, an inlet check valve between the compression chamber and the inlet, a digital inlet valve between the compression chamber and the inlet check valve, a variable volume chamber connected to the compression chamber through a manifold and the digital inlet valve, and a plunger or piston configured to compress the fluid in the compression chamber and the variable volume chamber.

Description

[0001] Cross References to Related Applications [0002] This application claims priority from German patent application No. 102018217644.2 filed on October 15, 2018, the content of which is hereby incorporated by reference in its entirety. technical field [0003] The present application relates to a high pressure pump and method of compressing fluid into an injection system, in particular, to a high pressure pump and method for a direct injection internal combustion engine. Background technique [0004] For internal combustion engines of vehicles, high pressure pumps have been used to pressurize the fuel up to 350 bar, with a fuel flow rate of up to 100 liters per hour (L / h) for the fuel injection system. This type of fuel pump is called a plunger pump and is driven by a camshaft. A supply pressure of about 3.5-5 bar is required to fill the compression chamber in the pump through the digital inlet valve, especially at high engine speeds and its plunger speed. To increase...

Claims

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Application Information

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IPC IPC(8): F02M59/02
CPCF02M59/02F04B39/1066F04B53/14F04B43/0054F04B43/0063F04B53/10F02M59/464F04B53/16F04B41/06F04B45/02F04B49/243F04B49/035F04B39/123F04B1/0408F02M59/366F02M59/462F02M55/04F02M59/367
Inventor 斯蒂芬·菲茨纳亚历山大·山特
Owner HYUNDAI MOTOR CO LTD