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:
Apr. 13, 1976
Filed:
Mar. 19, 1974
Applicant:
Inventors:
Assignee:
Robert Bosch G.m.b.H., Gerlingen-Schillerhohe, DT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02B / ;
U.S. Cl.
CPC ...
60274 ; 60276 ; 60284 ; 60285 ; 123 / ; 1231 / ; 1231 / ; 1231 / ;
Abstract
The exhaust system of the engine is provided with a reactor, for example a catalytic reactor; the air-fuel mixture normally fed to the engine is set to be on the lean range. During starting, the mixture is enriched for a predetermined time; the degree of enrichment is then decreased, in dependence on engine, or exhaust system temperature. After the engine, or the reactor has reached operating temperature, the composition of the mixture is controlled by operating parameters of the engine, or sensed exhaust gas composition.