HIGH-OUTPUT ENGINE AND VEHICLE - YAMAHA MOTOR CO LTD

Title:

HIGH-OUTPUT ENGINE AND VEHICLE

Document Type and Number:

WIPO Patent Application WO/2006/018950

Kind Code:

A1

Abstract:

The length of a partition wall of a suction port is determined such that the ratio between the length of the partition wall and the center-to-center distance between adjacent suction valves is not less than 0.45 and not more than 0.72. An injector is installed on the upper side of a throttle body. The angle &phgr of installation of the injector is set to not less than 42 degrees and not more than 55 degrees. The injection start timing of the injector is set to within the period in which the suction valve is closed.

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Inventors:

KATO RYUSUKE
ISHIZAKI AKIRA
MORIYA YOSHIHIKO

Application Number:

PCT/JP2005/013600

Publication Date:

February 23, 2006

Filing Date:

July 25, 2005

Export Citation:

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Assignee:

YAMAHA MOTOR CO LTD (JP)
KATO RYUSUKE
ISHIZAKI AKIRA
MORIYA YOSHIHIKO

International Classes:

F02F1/42; B62M7/02; F02D9/10; F02D41/34; F02M35/16; F02M69/04

Foreign References:

JPH07224718A	1995-08-22
JPH0466774A	1992-03-03
JPH084537A	1996-01-09
JP2003013826A	2003-01-15

Attorney, Agent or Firm:

Fukushima, Yoshito (4-1 Hiroshiba-ch, Suita-shi Osaka 52, JP)

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