US 5,664,542 AGranted

Electronic throttle system

AssigneesHitachi, Ltd., Hitachi Automotive Engineering Co., Ltd.

InventorsHiroshi Kanazawa, Fumio Tajima, Yasuhiko Honda, Yasushi Sasaki, Teruhiko Minegishi, Yoshikatu Hashimoto, Tatsuya Yoshida, Yuzo Kadomukai

Life of this patent

Estimating the term…

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Abstract

On one side of a valve shaft, there are provided an accelerator drum connected to an accelerator pedal by an accelerator wire, a return spring for urging the accelerator drum in a valve closing direction, and an accelerator sensor for detecting rotation of the accelerator drum and transmitting a detected signal to a host system. On the other side of the valve shaft, there are provided a large-diameter gear and an opening sensor. An armature of a solenoid clutch is attached to the gear and held on a motor shaft via a slide bearing. Thus, the motor, the solenoid clutch and the throttle valve are arranged into a U-shaped form for interconnection through four gears.

Claims4

Dependent claims

An electronic throttle system, comprising:

an accelerator pedal sensor detecting a treading amount of said accelerator pedal;
an opening sensor detecting an opening of a throttle valve;
and
an opening control means controlling the opening of said throttle valve by controlling a rotation of a motor for driving a valve shaft of said throttle valve through at least one gear in response to the treading amount of said accelerator pedal based on output signals from both said accelerator pedal sensor and said opening sensor;
wherein said accelerator pedal sensor and said opening sensor are attached to a throttle body device rotatably supporting said throttle valve, said opening sensor being arranged on a same side of said valve shaft as said at least one gear.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 08/608,742Filed 29 Feb 1996 · division
Priority: JP 4-18974916 Jul 1992
Granted: 9 Sep 1997
Term ends: Not estimatedThe source records don’t support an estimate.

Classification8 codes

F02D 11/10
Characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance: of the…
B60K 26/04
Arrangement or mounting of propulsion-unit control devices in vehicles: of means connecting initiating means or elements to propulsion unit
F02D 11/107
Of the electric type: safety-related aspects
F02D 2011/103
Characterised by the means for actuating the throttles: at least one throttle being alternatively mechanically linked to the pedal or moved by an…

Family

Serial86,210Parent of this division · filed 6 Jul 1993
Serial429,166Parent of this division · filed 26 Apr 1995
US 5,517,966 AParent of this division
US 5,431,141 AParent of this division
US 5,664,542 AThis patent

From the US filing history. Foreign family members aren’t listed.