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. 17, 2004
Filed:
Apr. 18, 2002
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
A warm-up control apparatus of an internal combustion engine is installed in a vehicle equipped with a brake booster that uses a negative pressure in an intake pipe of the internal combustion engine. The apparatus performs a warm-up control of the engine by retarding the ignition timing and increasing the amount of intake air. If during execution of the warm-up control, the brake pedal is operated, or the accelerator is off while the vehicle is running at or above a predetermined speed, or the decreasing rate of the amount of accelerator operation is greater than or equal to a predetermined value while the vehicle is running at or above a predetermined speed, the control apparatus recovers the intake pipe negative pressure by reducing the amount of intake air set in relation to the warm-up control.