Title: Fuel injection system

Abstract: In a fuel injection system, the combination of an air measuring valve, biasing structure and an air suction tube of an internal combustion engine. The suction tube defines an air flow cross section and the air measuring valve provides a controlled flow of air through the flow cross section, with the air measuring valve being mounted eccentrically within the suction tube against a force produced by the biasing structure to effect the noted control. Both the air measuring valve and the suction tube have cooperating surfaces which effect a closing of the flow cross section by the biasing structure when no air is flowing; and during air flow a gradual opening at one end of the air measuring valve by an impedance induced force as a function of the pressure difference prevailing on both sides of the air measuring valve and a further opening at the other end of air measuring valve as the air flow increases through the opening at the first mentioned end.

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Inventors: Holzbaur, Siegfried (Stuttgart, DE, US)

Application Number: 884315
Filing Date: 1978-03-07
Publication_date: 1980-04-15
Assignee: Robert Bosch GmbH (Stuttgart, DE)
Primary Class(es): 123/452 123/445, 137/527.8, 251/305, 261/44.2
Other Classes:
US Patent Ref:

1477280	Dec, 1923	Pordes	261/44.
1493894	May, 1924	Reece	261/44.
1534212	Apr, 1925	Hess	261/44.
1746681	Feb, 1930	Richardson	261/44.
1839102	Dec, 1931	Kessel	261/44.
2617638	Nov, 1952	Udale	261/44.
2755818	Jul, 1956	Dietz	261/44.
3144045	Aug, 1964	Fitzpatrick	137/527.
3352318	Nov, 1967	Yanowitz	137/527.
3926215	Dec, 1975	Macleod	137/527.
4079718	Mar, 1978	Holzbaur	123/139.

Other Refs: 611784

Oct, 1926	FR

Primary Examiner: Lazarus, Ronald H.
Assistant Examiner: Moy, M.
Attorney: Greigg; Edwin E.