Vehicle Control Device

• US 20130268181A1
• Filed: 12/28/2011
• Published: 10/10/2013
• Est. Priority Date: 12/28/2010
• Status: Abandoned Application

• Current Assignee: Hitachi Automotive Systems Limited (Hitachi, Ltd.)
• Original Assignee: Hitachi Automotive Systems Limited (Hitachi, Ltd.)
• Inventors: Nagasawa, Yoshiaki, Otsu, Eiichi, Onishi, Koji, Machida, Kenichi, Omata, Shigehiko, Nakazato, Shigenori
• Application Number:
  US13/994,553
• Publication Number:
  US 20130268181A1
• Time in Patent Office: Days
• US Class Current: 701/112
• CPC Class Codes: F02D 41/04 Introducing corrections for particular operating conditions F02D41/14 takes precedence
• CPC Class Codes: F02N 11/0814 comprising means for controlling automatic idle-start-stop
• CPC Class Codes: F02N 11/0844 with means for restarting the engine directly after an engine stop request, e.g. caused by change of driver mind
• CPC Class Codes: F02N 11/0855 during engine shutdown or after engine stop before start command, e.g. pre-engagement of pinion
• CPC Class Codes: F02N 11/101 for preventing engine starter actuation or engagement
• CPC Class Codes: F02N 2200/023 Engine temperature
• CPC Class Codes: F02N 2200/024 Engine oil temperature
• CPC Class Codes: F02N 2250/04 Reverse rotation of the engine
• CPC Class Codes: Y02T 10/40 Engine management systems

Abstract

A vehicle control device is provided with an idle reduction system for performing automatic stopping and automatic starting of the internal combustion engine, where the idle reduction system includes a starter that separately causes movement of a pinion gear and driving of a motor, and a semiconductor switching element that controls the movement of the pinion gear and the driving of the motor, the control device being provided with a means for detecting or estimating that the internal combustion engine reversely rotates in a process in which the internal combustion engine stops rotating and a means for inhibiting the driving of the motor by the semiconductor switching element for a predetermined period of time in the case where the reverse rotation is detected or estimated.

Claims

1. A vehicle control device provided with an idle reduction system performing automatic stop and automatic start-up of an internal combustion engine,

wherein the idle reduction system includes a starter that separately causes movement of a pinion gear and driving of a motor;

and a semiconductor switching element that controls the movement of the pinion gear and the driving of the motor, and

the vehicle control device comprises a means for detecting or estimating that the internal combustion engine reversely rotates in a process in which the internal combustion engine stops rotating and a means for inhibiting the driving of the motor by the semiconductor switching element for a predetermined period of time when the reverse rotation is detected or estimated.

2. The vehicle control device according to claim 1, wherein when the number of rotations of a crank shaft of the internal combustion engine is smaller than a predetermined value, the means for estimating the reverse rotation estimates that the internal combustion engine reversely rotates.

3. The vehicle control device according to claim 1, wherein when acceleration of a crank shaft of the internal combustion engine is smaller than a predetermined value, the means for estimating the reverse rotation estimates that the internal combustion engine does not reversely rotate and stops.

5. The vehicle control device according to claim 1, wherein the driving inhibition time of the motor searches an optimal value from a constant table in which a cooling water temperature and a lubricant temperature of the internal combustion engine and a lubricant temperature of a transmission are parameters.

6. The vehicle control device according to claim 1, wherein the driving inhibition time of the motor searches a value of a condition from a plurality of constant tables classified into auxiliary machine load of the internal combustion engine and a gear position condition of a transmission.

4. (canceled)