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. 25, 2000
Filed:
Dec. 05, 1997
Hiroyuki Mizuno, Toyota, JP;
Yukio Yoshioka, Toyota, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
Pressure in an air intake passage is changed according to an opening size of a throttle valve. The throttle valve is open when an engine performs a stratified charge combustion. The opening size of the throttle valve is selected based on a load applied to the engine when the engine performs a homogeneous charge combustion. A brake booster is connected to the intake passage and accumulates the pressure that is generated in the intake passage. The brake booster obtains braking force for the vehicle when the accumulated pressure is smaller than a predetermined reference value. The throttle valve is actuated by a controller to decrease the pressure in the intake passage when pressure in the brake booster detected by a pressure sensor is larger than the predetermined reference value. The reference value is corrected by the controller based on movement characteristics of the vehicle that is detected by velocity sensor.