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:
Sep. 30, 2014
Filed:
Jan. 12, 2011
Applicants:
Takeshi Kitayama, Susono, JP;
Naoyuki Hayakawa, Susono, JP;
Inventors:
Takeshi Kitayama, Susono, JP;
Naoyuki Hayakawa, Susono, JP;
Assignee:
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02B 25/06 (2006.01);
U.S. Cl.
CPC ...
Abstract
A PCV system for an internal combustion engine that can suppress occurrence of preignition due to oil inflow into a cylinder is provided. A path switching valve is controlled so that blowby gas flows via a bypass passage, in a preig occurrence region. Thereby, path pressure loss increases, a PCV flow rate is decreased, and blowby gas can be passed through a separator with a high collection efficiency. As a result, an oil takeaway amount can be reduced, and occurrence of preignition due to cylinder oil inflow can be suppressed.