Multiple throttle device

Patent metadata

Field	Value
Publication number	US-9347382-B2
Application number	US-201213689486-A
Country	US
Kind code	B2
Filing date	Nov 29, 2012
Priority date	Nov 30, 2011
Publication date	May 24, 2016
Grant date	May 24, 2016

Abstract

A multiple throttle device of the invention employs a constitution in which, as a sensor section that detects the opening of throttle valves, a shaft member formed to have a different axis from a throttle shaft is positioned within the width L of a throttle body, and a throttle position sensor is disposed in the shaft member.

First claim

What is claimed is:

1. A multiple throttle device mounted on an engine having a plurality of cylinders arranged in line, comprising:
a throttle body having intake passages arranged corresponding to intake ports of cylinders of the engine;
throttle valves situated in the intake passages;
a throttle shaft that is rotatably disposed in the throttle body along the throttle valves arranged in line and supports the throttle valves so as to allow the throttle valves to be opened and closed;
a drive section that drives the throttle shaft, and
a sensor section that detects the opening of the throttle valve, wherein
the sensor section includes:
a shaft member formed to have a different axis from the throttle shaft, the shaft member is positioned within the width of the throttle body and displaced with the throttle shaft; and
a throttle position sensor that is disposed in the shaft member and detects the opening of the throttle valves by the displacement of the shaft member;
the shaft member, the throttle position sensor and the drive section are disposed close to a center of the throttle body in a direction where the intake passages are arranged;
the shaft member, the throttle position sensor and the drive section are disposed between predetermined intake passages located in the center of the throttle body;
the shaft member and the throttle position sensor are disposed on one side in a radial direction of the intake passages across the throttle shaft in a zone between the predetermined intake passages; and
the drive section is disposed on the other side in the radial direction of the intake passages across the throttle shaft.

2. The multiple throttle device according to claim 1 , wherein:
the sensor section has a transmission mechanism for transmitting the displacement of the throttle shaft to the shaft member, and the transmission mechanism is disposed between the intake passages.

3. The multiple throttle device according to claim 1 , wherein:
the shaft member, the throttle position sensor and the drive section are formed as one unit together with a portion of the throttle body, which occupies the space between the predetermined intake passages; and
a portion of the throttle body, other than the portion located between the predetermined intake passages, is used as a component that is detachably fixed to the unit as a separated body from the unit.

4. The multiple throttle device according to claim 2 , wherein:
the shaft member, the throttle position sensor and the drive section are formed as one unit together with a portion of the throttle body, which occupies the space between the predetermined intake passages; and
a portion of the throttle body, other than the portion located between the predetermined intake passages, is used as a component that is detachably fixed to the unit as a separated body from the unit.

Assignees

• Mikuni Kogyo Kk

Inventors

• Machida Toshinobu
• Shinohara Hiroyuki

Classifications

• F02D9/109 Primary

  having two or more flaps · CPC title

• F02D9/1065

  Mechanical control linkage between an actuator and the flap, e.g. including levers, gears, springs, clutches, limit stops of the like · CPC title

• F02D9/105 Primary

  having a throttle position sensor (detection of actuation F02D11/106) · CPC title

• F02D9/1095

  Rotating on a common axis, e.g. having a common shaft · CPC title