The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 06, 1990
Filed:
Aug. 26, 1988
Robert Bosch GmbH, Stuttgart, DE;
Abstract
In lean operation of internal combustion engines having externally supplied ignition, improvement in terms of fuel consumption and emissions are obtained if the fuel is injected directly into the combustion chamber. Because the gas exchange guide cross sections are large, the space available for installing the injection valve and spark plug is very limited, and disruptions in the course of combustion occur when the injection valve and ignition device are too far apart. By developing a fuel injection valve that has wire electrodes on the injection end to serve as an ignition device, the spark gap arcing over in the vicinity of the fuel introduced by the injection valve, optimal ignition conditions are attained even for poorly ignited fuels or when the proportion of fuel in the combustion chamber charge is extremely low (stratified charge operation).