Title: Injection valve for internal combustion engines

Abstract: An injection valve to control the fuel injection into the intake duct of an internal combustion engine. The injection valve, which is preferably electromagnetically activated, is placed in a supporting opening in the wall of an intake duct, and is provided with a gasket between the outer wall of the injection valve housing and the outer wall of the support. The injection valve housing is arranged contact-free in the support opening and the thus-produced annular slit is closed by a bellows member. The injection valve housing is associated at its free end with a fuel distributor element. In this manner a greater freedom of movement of the valve housing in the support opening is thereby provided in addition to a substantial increase in thermal insulation, whereby manufacturing tolerances and thermal fluctuations are not significant.

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Inventors: Kulke, Gunter (Esslingen, DE, US)

Application Number: 847299
Filing Date: 1977-10-31
Publication_date: 1979-03-13
Assignee: Robert Bosch GmbH (Stuttgart, DE)
Primary Class(es): 123/470
Other Classes:
US Patent Ref:

3776209	Dec, 1973	Wertheimer et al.	123/32.
3841277	Oct, 1974	Schafer	123/32.
3857573	Dec, 1974	Pugh	123/139.
3941109	Mar, 1976	Schmid	123/32.

Other Refs: 220864622088872233919

Aug, 1973	DE
Sep, 1973	DE
Jan, 1974	DE

Primary Examiner: Croyle, Carlton R.
Assistant Examiner: Smith, Leonard E.
Attorney: Greigg; Edwin E.