DEVICE AND METHOD FOR CONTROLLING VEHICLE

• US 20120065860A1
• Filed: 04/08/2010
• Published: 03/15/2012
• Est. Priority Date: 05/26/2009
• Status: Abandoned Application

• Current Assignee: Nissan Motor Co., Ltd.
• Original Assignee: Nissan Motor Co., Ltd.
• Inventors: Isaji, Hiroshi, Sato, Takeshi, Kubo, Susumu
• Application Number:
  US13/321,673
• Publication Number:
  US 20120065860A1
• Time in Patent Office: Days
• US Class Current: 701/70
• CPC Class Codes: B60T 13/52 indirect, i.e. vacuum booster units
• CPC Class Codes: F02D 11/10 of the electric type
• CPC Class Codes: F02D 2250/41 Control to generate negative pressure in the intake manifold, e.g. for fuel vapor purging or brake booster
• CPC Class Codes: F02D 41/0255 to accelerate the warming-up of the exhaust gas treating apparatus at engine start
• CPC Class Codes: F02D 41/064 at cold start F02D41/067 takes precedence
• CPC Class Codes: F02P 5/1508 with particular means during idling
• CPC Class Codes: Y02T 10/40 Engine management systems

Abstract

Control apparatus (and a control method) for a vehicle, the vehicle including: an internal combustion engine (EG); a brake booster (21) in which an intake negative pressure of the internal combustion engine is used; and a brake master cylinder (22) connected to an onboard hydraulic pressure actuator (33), the control apparatus comprising: pressure detecting means (27) for detecting a fluid pressure of the brake master cylinder; driving state detecting means (133) for detecting the driving state of the internal combustion engine; and control means (11) for retarding an ignition timing with a throttle valve (114) of the internal combustion engine opened in a case where the driving state detected by the driving state detecting means is in the idle driving state during a cold state of the internal combustion engine and for driving the fluid pressure actuator to assist the brake master cylinder in a case where the fluid pressure detected by the pressure detecting means is equal to or lower than a predetermined value during the idling state of the engine and during the cold state of the engine.

Claims

1-8. -8. (canceled)

9. A control apparatus for a vehicle, comprising:

an internal combustion engine;

a brake booster using an intake negative pressure of the internal combustion engine;

a brake master cylinder connected to a fluid pressure actuator mounted in the vehicle;

pressure detecting means for detecting a fluid pressure of the brake master cylinder;

driving state detecting means for detecting a driving state of the internal combustion engine;

vehicle stop determining means for determining whether the vehicle is stopped; and

control means for performing a pressure increase for the fluid pressure of the brake master cylinder using the fluid pressure actuator, in a case where the driving state detected by the driving state detecting means is an idle driving state during a cold of the internal combustion engine and the vehicle stop determining means determines that the vehicle is stopped, opening a throttle valve of the internal combustion engine and retarding an ignition timing, in a state in which the pressure increase is performed.

10. The control apparatus for the vehicle as claimed in claim 9, wherein the fluid pressure actuator is the fluid pressure actuator included in an anti-lock brake system of the vehicle or a vehicle dynamics control system thereof.

11. The control apparatus for the vehicle as claimed in claim 9, wherein the control apparatus further comprises angle detecting means for detecting an inclination angle of the vehicle and the control means performs the pressure increase for the brake master cylinder using the fluid pressure actuator and retards the ignition timing with the throttle valve of the internal combustion engine opened only if the inclination angle of the vehicle detected by the angle detecting means is larger than a predetermined angle.

12. A control method for a vehicle, the vehicle comprising:

an internal combustion engine;

a brake booster using an intake negative pressure of the internal combustion engine; and

a brake master cylinder connected to a fluid pressure actuator mounted in the vehicle, the control method comprising;

detecting a fluid pressure of the brake master cylinder;

detecting a driving state of the internal combustion engine;

determining whether the vehicle is stopped; and

performing a pressure increase for the fluid pressure of the brake master cylinder using the fluid pressure actuator, in a case where the detected driving state is an idle driving state during a cold of the internal combustion engine and the vehicle is determined to be stopped, opening a throttle valve of the internal combustion engine and retarding an ignition timing, in a state in which the pressure increase is performed.

13. The control method for the vehicle as claimed in claim 12, wherein the fluid pressure actuator is the fluid pressure actuator included in an anti-lock brake actuator of the vehicle or in a vehicle dynamics control system thereof.

14. The control method for the vehicle as claimed in claim 12, wherein the control method further comprises detecting an inclination angle of the vehicle and the pressure increase for fluid pressure of the brake master cylinder is performed and the ignition timing is retarded with the throttle valve of the internal combustion engine opened only if the detected inclination angle of the vehicle is larger than a predetermined angle.