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. 21, 2012
Filed:
Feb. 19, 2008
Jongmin Lee, Pittsford, NY (US);
Richard B. Roe, Henrietta, NY (US);
Jongmin Lee, Pittsford, NY (US);
Richard B. Roe, Henrietta, NY (US);
Delphi Technologies, Inc., Troy, MI (US);
Abstract
In a dual intake valve arrangement for an internal combustion engine, a continuously variable valve lift (CVVL) system controls two intake valves for one or more engine cylinders. In each cylinder, one of the intake valves includes an associated valve deactivation device, and the other intake valve does not. To improve in-cylinder air flow turbulence under low valve lift, one of the intake valves may be deactivated, resulting in mixture intake through only one valve, resulting in strong swirl by unbalanced flow. A CVVL-equipped engine including a valve deactivation device provides the same amount of air flow for the same engine load as a prior art CVVL engine. A method of introducing a swirl to the mixture is also described.