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:
Oct. 31, 2006
Filed:
Mar. 10, 2005
David R. Lancaster, Troy, MI (US);
Mark G. Kosowski, Rochester Hills, MI (US);
Mark A. Theobald, Bloomfield Hills, MI (US);
James A. Cogswell, Ii, Clarkston, MI (US);
Bryan R. Snyder, Waterford, MI (US);
John P. Miller, Northville, MI (US);
David J. Freiman, Ann Arbor, MI (US);
David R. Lancaster, Troy, MI (US);
Mark G. Kosowski, Rochester Hills, MI (US);
Mark A. Theobald, Bloomfield Hills, MI (US);
James A. Cogswell, II, Clarkston, MI (US);
Bryan R. Snyder, Waterford, MI (US);
John P. Miller, Northville, MI (US);
David J. Freiman, Ann Arbor, MI (US);
General Motors Corporation, Detroit, MI (US);
Abstract
An internal combustion engine's start-up torsional disturbances are reduced by drawing down intake manifold pressure prior to engine cranking. In a preferred arrangement, a secondary air injection reaction pump is adapted for evacuating the intake manifold to effect the desired draw down of the intake manifold pressure.