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Title:
VARIABLE VALVE GEAR FOR INTERNAL COMBUSTION ENGINE
Document Type and Number:
WIPO Patent Application WO/2011/064845
Kind Code:
A1
Abstract:
A variable valve gear (10) for an internal combustion engine, capable of, even if cams (14) are not provided with base circle sections which are common to the cylinders or even if the base circle sections are short, collectively and smoothly switching between the valve opening characteristics of the valves (26) of the cylinders using rigid body members (50, etc.) on the basis of the operation of a single actuator (electromagnetic solenoid) (56). A variable valve gear for an internal combustion engine is provided with a switching mechanism (32) for changing the operational state of rocker arms (18, 20), which are disposed at each cylinders, to select the valve opening characteristics of valves (26) provided to the cylinder. The switching mechanism (32) includes a delay mechanism (60) which is configured in such a manner that, for a cylinder the valves (26) of which are being lifted during the operation of the electromagnetic solenoid (56), delays the displacement of link shafts (50a, 50b) which are rigid body members.

Inventors:
TSUZUKI, Motohiro (1 Toyota-cho, Toyota-sh, Aichi 71, 〒4718571, JP)
都築 基浩 (〒71 愛知県豊田市トヨタ町1番地トヨタ自動車株式会社内 Aichi, 〒4718571, JP)
SHIMASAKI, Shinobu (1 Toyota-cho, Toyota-sh, Aichi 71, 〒4718571, JP)
嶋崎 忍 (〒71 愛知県豊田市トヨタ町1番地トヨタ自動車株式会社内 Aichi, 〒4718571, JP)
Application Number:
JP2009/069852
Publication Date:
June 03, 2011
Filing Date:
November 25, 2009
Export Citation:
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Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA (1 Toyota-cho, Toyota-shi Aichi, 71, 〒4718571, JP)
トヨタ自動車株式会社 (〒71 愛知県豊田市トヨタ町1番地 Aichi, 〒4718571, JP)
TSUZUKI, Motohiro (1 Toyota-cho, Toyota-sh, Aichi 71, 〒4718571, JP)
都築 基浩 (〒71 愛知県豊田市トヨタ町1番地トヨタ自動車株式会社内 Aichi, 〒4718571, JP)
SHIMASAKI, Shinobu (1 Toyota-cho, Toyota-sh, Aichi 71, 〒4718571, JP)
International Classes:
F01L13/00
Domestic Patent References:
WO2009136551A1
Foreign References:
JP2003120375A
JPH08312318A
JP2006299875A
JPH10196334A
Attorney, Agent or Firm:
TAKAHASHI, Hideki et al. (Takada, Takahashi & Partners 5th Floor, Intec 88 Bldg., 20, Araki-cho, Shinjuku-k, Tokyo 07, 〒1600007, JP)
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