Fuel injection system for internal combustion engines

Details Fuel injection system for internal combustion engines Fuel injection system for internal combustion engines

1994-08-19

1995-08-15

Moulis, Thomas N.

Internal-combustion engines

Charge forming device

Fuel injection system

123446, 239 96, F02M 6302, F02M 5106

Patent

active

054410290

ABSTRACT:
A fuel injection system for internal combustion engines, having a high-pressure fuel pump and a feed line that feeds fuel from a low-pressure chamber into a pressure-regulatable high-pressure collection chamber. The high pressure collection chamber, which communicates with individual injection units via high-pressure lines. These injection units, which correspond in number to the injection locations in the combustion chamber of the engine to be supplied, are each composed of one injection valve and one three-way valve that controls the injection. A first pressure chamber at the injection valve communicates continuously with the valve seat thereof and with the high-pressure line, and a second pressure chamber, defined at least indirectly by the end face remote from the seat of the injection valve member, communicates with the three-way valve, which connects the second pressure chamber alternatingly with the high-pressure line or a relief line into the low-pressure chamber, in order to control the injection process. According to the invention, the three-way valve is embodied as a double seat valve, which forms a throttling function in the relief direction of the second pressure chamber.

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Electronic Controlled Fuel Injection System for Clean Diesel Engine by Toshihiko Omori, pp. 28-33, 1992.

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