Title: Method and apparatus for fuel injection control

Abstract: A control pulse generator for the fuel injection system of internal combustion engines. The rpm-dependent trigger signal is applied simultaneously to two multivibrators one of which generates pulses whose length is determined by engine parameters while the other generates pulses of fixed length. A logical circuit selects the longer of these pulses so that the fuel control pulse will always have at least a minimum length.

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Inventors: Drews, Ulrich (Vaihingen-Pulverdingen, DT)
Werner, Peter (Stuttgart, DT)
Winkelmann, Lothar (Ludwigsburg, DT)

Application Number: 702929
Filing Date: 1976-07-06
Publication_date: 1978-04-18
Assignee: Robert Bosch GmbH (Stuttgart, DT)
Primary Class(es): 123/483
Other Classes:
US Patent Ref:

2842108	Jul, 1958	Sanders	123/32.
3662720	May, 1972	Boeters et al.	123/32.
3749065	Jul, 1973	Rothfusz et al.	123/32.
3785353	Jan, 1974	Borisou et al.	123/32.
3854458	Dec, 1974	Reddy	123/32.
3863054	Jan, 1975	Monpetit	123/32.

Other Refs: 1,962,573

Jun, 1971	DT

Primary Examiner: Myhre, Charles J.
Assistant Examiner: Lall, Parshotam S.
Attorney: Greigg; Edwin E.