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:
Jan. 27, 2009
Filed:
Aug. 14, 2007
Sungbae Park, Cupertino, CA (US);
Jasim Ahmed, Mountain View, CA (US);
Han Ho Song, Stanford, CA (US);
Aleksandar Kojic, Sunnyvale, CA (US);
Jean-pierre Hathout, Stuttgart, DE;
Martin Rauscher, Ludwigsburg, DE;
John F. Christensen, Mountain View, CA (US);
Sungbae Park, Cupertino, CA (US);
Jasim Ahmed, Mountain View, CA (US);
Han Ho Song, Stanford, CA (US);
Aleksandar Kojic, Sunnyvale, CA (US);
Jean-Pierre Hathout, Stuttgart, DE;
Martin Rauscher, Ludwigsburg, DE;
John F. Christensen, Mountain View, CA (US);
Robert Bosch GmbH, Stuttgart, DE;
Abstract
In a multi-mode, 2-stroke/4-stroke internal combustion engine operation, by switching the engine stroke from 4-stroke operation to 2-stroke operation so that the combustion frequency is doubled, doubling of the engine power is achieved even at the same work output per cycle. In order to meet the demand of extremely high power, the engine operates in 4-stroke boosted SI operation transitioned from 2-stroke HCCI operation at pre-set level of power and crank speed requirements. By combining the multi-stroke (2-stroke HCCI and 4-stroke HCCI) and multi-mode operation (2-stroke HCCI and 4-stroke boosted SI operation), full load range and overall high efficiency with minimal NOx emission are achieved.