US 7,500,467 B2
Throttle opening control system and method for internal combustion engine
Hiroyuki Hanamura, Gotenba (Japan)
Assigned to Toyota Jidosha Kabushiki Kaisha, Toyota-shi (Japan)
Filed on Jul. 18, 2007, as Appl. No. 11/879,504.
Claims priority of application No. 2006-246987 (JP), filed on Sep. 12, 2006.
Prior Publication US 2008/0060614 A1, Mar. 13, 2008
Int. Cl. F02D 11/10 (2006.01); F02D 11/00 (2006.01)
U.S. Cl. 123—399  [123/376] 12 Claims
OG exemplary drawing
 
1. A throttle opening control system for an internal combustion engine that is installed on a vehicle and drives the vehicle via a driving system, comprising:
a first throttle opening holding device that performs first throttle opening holding control for temporarily holding a throttle opening substantially constant during a process of increasing the throttle opening when an accelerator pedal is depressed while the vehicle is in a decelerating condition; and
a second throttle opening holding device that performs second throttle opening holding control for temporarily holding the throttle opening substantially constant again during the process of increasing the throttle opening, after the first throttle opening holding control is finished, wherein the first throttle opening holding device and the second throttle opening holding device perform the respective temporary holdings prior to the throttle opening reaching a target throttle opening.