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:
Feb. 13, 2007
Filed:
Oct. 27, 2005
Applicants:
Takao Suzuki, Numazu, JP;
Hidenori Usui, Toyota, JP;
Inventors:
Takao Suzuki, Numazu, JP;
Hidenori Usui, Toyota, JP;
Assignee:
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01M 1/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
A feed pumpthat is driven by the axial torque of an internal combustion engineis installed. An electric scavenge pumpis installed. A base value for the ratio (S/F ratio) between the discharge volume of the scavenge pumpand feed pumpis calculated. The base value is corrected so that the S/F ratio is lower in a region where the engine speed is high than in a region where the engine speed is low. The discharge volume of the scavenge pumpis controlled in accordance with the S/F ratio that is corrected in the above manner.