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:
Apr. 23, 1991
Filed:
Jun. 08, 1990
Glen R MacFarlane, Clarkston, MI (US);
General Motors Corporation, Detroit, MI (US);
Abstract
An intake reservoir for an engine having an intake passage leading to a cylinder, and a check valve in the intake passage to allow fluid flow toward the cylinder and obstruct fluid back-flow in the reverse direction. An intake valve is seated in the intake passage between the check valve and cylinder. A bypass port is located on the intake passage so that the bypass port communicates with a trapped volume defined by the portion of the intake passage between the check valve and intake valve. The intake reservoir comprises a reservoir cavity having a single cavity port, and a port passage connected between the cavity port and the bypass port enabling fluid flow between the trapped volume and the reservoir cavity. The intake reservoir further comprises a control valve connected to the port passage enabling active adjustment of the flow area of the port passage throughout a range of engine operating conditions to regulate fluid flow between the trapped volume and reservoir cavity.