ELECTRONIC THROTTLE CONTROL DEVICE

Title:

ELECTRONIC THROTTLE CONTROL DEVICE

Document Type and Number:

Japanese Patent JP2002106372

Kind Code:

A

Abstract:

To drive a motor by a drive circuit having a simple structure to improve the closing directional responsiveness without enlarging the drive circuit.

In this electronic throttle control device, a throttle valve is driven to opening direction by the motor 5 and to closing direction by the energizing force of a return spring. The drive circuit comprises a switching transistor 41 serially connected to the motor 5 in order to control the current- carrying to the motor 5; a circulating diode 42 connected in parallel to the motor 5 in order to release a back current generated in the motor 5 when stopping the current-carrying; a circulating resistor 42 serially connected to the circulating diode 42 in order to consume the circulating current carried in the circulating diode 42 resulted from the back current; and a bypass transistor 44 for bypassing the current carried in the circulating resistor 43.

Inventors:

MAKISAKO HIROYUKI
ISHIDA KATSUMI
IKEDA SHINJI
FUKAZAWA TAKESHI
TAKAHASHI JUNJI
MORIGUCHI HIROSHI
YOSHIMI YASUO

Application Number:

JP2000295946A

Publication Date:

April 10, 2002

Filing Date:

September 28, 2000

Export Citation:

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Assignee:

AISAN IND
TOYOTA MOTOR CORP
FUJITSU TEN LTD

International Classes:

F02D11/10; F02D41/14; (IPC1-7): F02D11/10; F02D41/14

Attorney, Agent or Firm:

Takashi Tomizawa (2 outside)

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