Control apparatus and control method for vehicle

Patent metadata

Field	Value
Publication number	US-9611932-B2
Application number	US-200913260032-A
Country	US
Kind code	B2
Filing date	Jun 3, 2009
Priority date	Jun 3, 2009
Publication date	Apr 4, 2017
Grant date	Apr 4, 2017

Abstract

When initial drive control for an actuator driving a shift switch mechanism is completed, a P-ECU determines whether an IG signal is received. In the case where the P-ECU has not received the IG signal at the time when the initial drive control is completed, the P-ECU temporarily keeps the actuator in a state where the initial drive control is completed. In the case where the P-ECU receives the IG signal in the period from completion of the initial drive control to the time when a predetermined time T 2 has elapsed since completion of the initial drive control, the P-ECU executes P wall press control when the P-ECU receives the IG signal.

First claim

The invention claimed is:

1. A control apparatus for a vehicle having a shift switch mechanism for switching a shift range of a transmission by driving an actuator, said shift switch mechanism including a rotational member coupled to said actuator, and a restriction member for restricting rotation in a predetermined direction of said rotational member by contacting a predetermined portion of said rotational member when a rotational position in said predetermined direction of said rotational member is caused to reach a reference position corresponding to a predetermined shift range by driving said actuator,
said control apparatus comprising:
a first device for detecting that a user of said vehicle performs a start manipulation for starting said vehicle; and
a second device activated in response to detection of said start manipulation by said first device or in response to occurrence of a factor different from said start manipulation, for controlling driving of said actuator,
said second device determining, when said second device is activated, whether activation of said second device is caused by said start manipulation or said factor different from said start manipulation, said second device controlling said actuator so that press control is executed by rotating said rotational member in said predetermined direction to cause said predetermined portion of said rotational member to be pressed against said restriction member for detecting said reference position, when activation of said second device is caused by said start manipulation, and said second device controlling said actuator so that said press control is not executed, when activation of said second device is caused by said factor different from said start manipulation.

2. The control apparatus for a vehicle according to claim 1 , wherein
said actuator is required to undergo predetermined initial driving before driven by said press control, and
said second device executes initial control for performing said initial driving when said second device is activated, and determines after said initial control is completed whether activation of said second device is caused by said start manipulation or said factor different from said start manipulation.

3. The control apparatus for a vehicle according to claim 2 , said control apparatus further comprising a third device for transmitting to said second device start information that said start manipulation is detected by said first device, wherein
in a case where said second device receives said start information in a period from completion of said initial control to the time when a predetermined time has elapsed since completion of said initial control, said second device executes said press control based on a determination that activation of said second device is caused by said start manipulation and, in a case where said second device has not received said start information at the time when said predetermined time has elapsed since completion of said initial control, said second device does not execute said press control based on a determination that activation of said second device is caused by said factor different from said start manipulation.

4. The control apparatus for a vehicle according to claim 3 , wherein
in a case where said second device has not received said start information at the time when said initial control is completed, said second device temporarily keeps said actuator in a state after said initial control,
in a case where said second device does not receive said start information in the period from completion of said initial control to the time when said predetermined time has elapsed since completion of said initial control, said second device continues temporarily keeping said actuator in said state after said initial control,
in a case where said second device receives said start information in the period from completion of said initial control to the time when said predetermined time has elapsed since completion of said initial control, said second device executes, when said second device receives said start information, said press control without executing again said initial control, and
in a case where said second device has not received said start information at the time when said predetermined time has elapsed since completion of said initial control, said second device returns said actuator to a state before said initial control.

5. The control apparatus for a vehicle according to claim 1 , said control apparatus further comprising a fourth device for making an abnormality determination of whether an abnormality occurs to said second device, based on a result of said press control by said second device, wherein
said fourth device does not make said abnormality determination when said second device cannot execute said press control based on the fact that activation of said second device is caused by said factor different from said start manipulation.

6. The control apparatus for a vehicle according to claim 1 , wherein
said vehicle includes a power supply for supplying electric power to said second device,
said second device executes said press control to set said shift range to a parking range,
said control apparatus further comprises a fourth device for controlling supply of electric power from said power supply to said second device, and
in a case where said second device executes said press control based on the fact that activation of said second device is caused by said start manipulation, said fourth device inhibits stoppage of supply of electric power from said power supply to said second device when a predetermined condition including a condition that said shift range is a range different from said parking range is satisfied and, in a case where said second device cannot execute said press control based on the fact that activation of said second device is caused by said factor different from said start manipulation, said fourth device permits stoppage of supply of electric power from said power supply to said second device even when said predetermined condition is satisfied.

7. The control apparatus for a vehicle according to claim 1 , wherein
said vehicle is driven by at least an internal combustion engine, and
said factor different from said start manipulation includes necessity to diagnose an abnormality concerning said internal combustion engine while said second device is not activated.

8. A control method for a vehicle having a shift switch mechanism for switching a shift range of a transmission by driving an actuator, said shift switch mechanism including a rotational member coupled to said actuator, and a restriction member for restricting rotation in a predetermined direction of said rotational member by contacting a predetermined portion of said rotational member when a rotational position in said predetermined direction of said rotational member is caused to reach a reference position corresponding to a predetermined shift range by driving said actuator, and said vehicle including a first device for detecting that a user of said vehicle performs a start manipulation for starting said vehicle, and a second device activated in response to detection of said start manipulation by said first device or in response to occurrence of a factor different from said start manipulation, for controlling driving of said actuator,
said control method performed by said second device comprising the steps of:
determining, when said second device is activated, whether activation of said second device is caused by said start manipulation or said factor different from said start manipulation;
controlling said actuator so that press control is executed by causing said predetermined portion of said rotational member to be

Assignees

• Tsutsumi Takahiko
• Kitaori Ichiro
• Ueno Koki
• Sekiya Keisuke
• Suzuki Toshinari
• Toyota Motor Co Ltd

Inventors

• Tsutsumi Takahiko
• Kitaori Ichiro
• Ueno Koki
• Sekiya Keisuke
• Suzuki Toshinari

Classifications

• F16H61/12

  Detecting malfunction or potential malfunction, e.g. fail safe (in control of hydrostatic gearing F16H61/4192) {; Circumventing or fixing failures} · CPC title

• F16H2057/016

  Monitoring of overload conditions · CPC title

• F16H2061/326

  Actuators for range selection, i.e. actuators for controlling the range selector or the manual range valve in the transmission · CPC title

• F16H61/32 Primary

  Electric motors  {, actuators or related electrical control means}  therefor · CPC title