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. 18, 2005
Filed:
Mar. 19, 2003
Yasuhiro Shimizu, Wako, JP;
Sei Watanabe, Wako, JP;
Yasuhiro Shimizu, Wako, JP;
Sei Watanabe, Wako, JP;
Honda Giken Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
An engine with a variable compression ratio includes a connecting rod connected to a piston, a first arm turnably connected to the connecting rod and to a crankshaft through a crankpin, a second arm integrally connected to the first arm, a control rod turnably connected to the second arm, and a displaceable support shaft for supporting the other end of the control rod for turning movement. In the engine, a displacement Vhpivand a compression ratio εpivat the time when the support shaft is in any first position and a displacement Vhpivand a compression ratio εpivat the time when the support shaft is in a second position displaced from the first position are determined, and a relation, Vhpiv>Vhpivis satisfied when εpiv<εpiv, and a relation, Vhpiv<Vhpivis satisfied when εpiv>εpiv