# US 9,435,275 B2 · Vehicle control apparatus

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- Number: US 9,435,275 B2
- Document ID: US9435275B2
- Status: Granted
- Kind: B2
- Application number: 14/128,930
- Filed: 2011-07-01
- Published: 2014-05-15
- Granted: 2016-09-06
- Earliest claimed: 2011-07-01
- Assignees: Toyota Jidosha Kabushiki Kaisha
- Applicants: Masashi Takagi; Shinya Kodama; Akihiro Kida; Motonari Obayashi; Hiroshi Shimada; Akito Oonishi; Takamasa Kitamura; Michihito Shimada
- Inventors: Masashi Takagi; Shinya Kodama; Akihiro Kida; Motonari Obayashi; Hiroshi Shimada; Akito Oonishi; Takamasa Kitamura; Michihito Shimada
- Web page: https://patentgrep.com/patent/US9435275B2

## CPC

- F02D 29/02: peculiar to engines driving vehicles; peculiar to engines driving variable pitch propellers
- F02D 11/106: {Detection of demand or actuation}
- F02D 2200/602: Pedal position
- F02D 2200/702: Road conditions
- F02D: CONTROLLING COMBUSTION ENGINES (vehicle fittings, acting on a single sub-unit only, for automatically controlling vehicle speed B60K31/00; conjoint control of vehicle sub-units of different type or different function, road vehicle drive control systems for purposes other than the control of a single sub-unit B60W)

## Abstract

A brake override system (BOS) (1) prioritizes braking when both an accelerator and a brake are operated simultaneously by reducing the required accelerator operation amount value that is used to control drive force so that it is lower than the actual accelerator operation amount. The BOS (1) thus achieves a balance between hill-start performance after operation by the BOS (1) is cancelled and stopping performance during operation of the BOS (1) by increasing the required accelerator operation amount value at the time at which the return of the required accelerator operation amount value to the actual accelerator operation amount is initiated when the simultaneous operation of the accelerator and the brake ends.

## Claims

### Claim 1

A control device for a vehicle, comprising:
an electronic control unit (ECU), wherein, at a time of simultaneous operation of an accelerator and a brake, the ECU is configured to control an engine to make a required accelerator operation amount used for controlling a drive force smaller than an actual accelerator operation amount,
wherein when the simultaneous operation is canceled along with maintaining the accelerator operation and cancelling the braking operation, the ECU is configured to implement a return of the required accelerator operation amount to the actual accelerator operation amount firstly by implementing a specified amount of increase in the required accelerator operation amount at the time of starting the return of the required accelerator operation amount, and secondly by gradually increasing the required accelerator operation amount.

### Claim 2 (depends on 1)

The control device for the vehicle according to claim 1,
wherein the ECU is configured to change the specified amount of increase in the required accelerator operation amount in accordance with a gradient of a road surface on which the vehicle is located.

### Claim 3 (depends on 1)

The control device for the vehicle according to claim 1,
wherein the ECU is configured to change the specified amount of increase in the required accelerator operation amount in accordance with acceleration in a vehicle front-rear direction acting upon the vehicle.