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:
Aug. 21, 1990
Filed:
Mar. 09, 1988
Applicant:
Inventor:
Christopher K Schlunke, Kingsley, AU;
Assignee:
Orbital Engine Company Proprietary Limited, Balcatta, AU;
Primary Examiner:
Int. Cl.
CPC ...
F02D / ; F02M / ;
U.S. Cl.
CPC ...
123295 ; 123 / ; 123533 ;
Abstract
A method of operating a two-stroke spark ignition engine (9) wherein the fuel is injected directly into the engine combustion chamber (22). The timing of the injection of the fuel and the ignition of the fuel charge are varied according to engine load and speed conditions. Under low load and speed conditions substantially all the fuel is injected after closure of the exhaust port (20) and the fuel charge is ignited between 40 and 70 degrees of crank angle rotation before the top dead center point of the engine cycle. Under high load conditions substantially all the fuel is injected before exhaust port closure.