# US 7,744,504 B2 · Control apparatus of vehicle

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- Number: US 7,744,504 B2
- Document ID: US7744504B2
- Status: Granted
- Kind: B2
- Application number: 11/940,467
- Filed: 2007-11-15
- Published: 2008-05-22
- Granted: 2010-06-29
- Earliest claimed: 2006-11-16
- Assignees: Hitachi, Ltd.
- Inventors: Shinya Satou; Toshio Hori; Mamoru Nemoto
- Web page: https://patentgrep.com/patent/US7744504B2

## CPC

- B60W 10/02: including control of driveline clutches
- B60W 10/06: including control of combustion engines
- B60W 30/18027: {Drive off, accelerating from standstill}
- B60W 2510/0638: Engine speed
- B60W 2710/0644: Engine speed
- B60W: CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT

## Abstract

A vehicle control apparatus is provided which can detect a rotating speed drop of an engine generated together with a clutch connection so as to be set to a trigger of a control start. An engine rotating speed at a time of issuing the trigger is set to a target rotating speed, and a rotating speed feedback control having an engine torque as an operation amount is carried out. An ignition retard and a fuel cut are provided as an operator for engine torque in addition to an intake air amount operation by an electronically controlled throttle.

## Claims

### Claim 1

A control apparatus of a vehicle having an engine and a clutch, wherein a target engine rotating speed is determined at a time of connecting the clutch in said vehicle, and a rotating speed feedback control having an engine torque as an operation amount is executed for a term of the clutch connection in such a manner that an engine rotating speed coincides with said target engine rotating speed, wherein a start timing of said rotating speed feedback control is determined on the basis of a predetermined engine rotating speed decreasing rate.

### Claim 2 (depends on 1)

A control apparatus of a vehicle as claimed in claim 1, wherein a start timing of said rotating speed feedback control is determined on the basis of an ON and OFF switch information of the clutch.

### Claim 3 (depends on 1)

A control apparatus of a vehicle as claimed in claim 1, wherein a start timing of said rotating speed feedback control is determined on the basis of a clutch stroke information.

### Claim 4 (depends on 1)

A control apparatus of a vehicle as claimed in claim 1, wherein said target engine rotating speed is computed on the basis of a value storing the engine rotating speed at a time of said rotating speed feedback control.

### Claim 5 (depends on 1)

A control apparatus of a vehicle as claimed in claim 1, wherein said target engine rotating speed is computed on the basis of an accelerator opening degree information.

### Claim 6 (depends on 1)

A control apparatus of a vehicle as claimed in claim 1, wherein said engine torque operates any of an electronically controlled throttle, a variable intake valve, a fuel cut and an ignition retard independently or in combination.

### Claim 7 (depends on 1)

A control apparatus of a vehicle as claimed in claim 1, wherein a maximum operation amount of the engine torque reaches 50% or more of a maximum engine torque at the engine rotating speed, in said rotating speed feedback control.