JPS54140014A - Multistage veriable valve engine - Google Patents

Multistage veriable valve engine

Info

Publication number
JPS54140014A
JPS54140014A JP4670178A JP4670178A JPS54140014A JP S54140014 A JPS54140014 A JP S54140014A JP 4670178 A JP4670178 A JP 4670178A JP 4670178 A JP4670178 A JP 4670178A JP S54140014 A JPS54140014 A JP S54140014A
Authority
JP
Japan
Prior art keywords
rod
closing
suction
exhaust valves
high speed
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP4670178A
Other languages
Japanese (ja)
Other versions
JPS60535B2 (en
Inventor
Toshio Mae
Masaaki Takizawa
Masaya Ozeki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toyota Motor Corp
Original Assignee
Toyota Motor Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toyota Motor Corp filed Critical Toyota Motor Corp
Priority to JP4670178A priority Critical patent/JPS60535B2/en
Publication of JPS54140014A publication Critical patent/JPS54140014A/en
Publication of JPS60535B2 publication Critical patent/JPS60535B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Valve-Gear Or Valve Arrangements (AREA)
  • Valve Device For Special Equipments (AREA)

Abstract

PURPOSE: To provide the subject engine wherein a plurality of cams having different profiles are fixed to a cam shaft interlocking with a crank shaft of an engine, and cams are switched in the driving condition, whereby the period of time of closing and opening suction and exhaust valves is made variable.
CONSTITUTION: On a cam shaft 41 there are fixedly mounted a low speed cam 43a and a high speed cam 43b with which push rods 45a and 45b are in contact. The rod 45a comes into abutment with a rocker arm 29 through a spring 48, and the rod 45b comes into direct abutment with the arm 29. A solenoid 53 controlled by a computer 55 is connected to the high speed rod 45b, and, at the time of the low speed operation, the rod 45b is pulled to a position indicated by broken line and the opening and closing of the suction and exhaust valves are carried out by the rod 45a. Further, at the time of the high speed operation, the rod 45b is placed on a position indicated by solid line, and the opening and closing of suction and exhaust valves are carried out by the rod 45b.
COPYRIGHT: (C)1979,JPO&Japio
JP4670178A 1978-04-21 1978-04-21 variable valve engine Expired JPS60535B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4670178A JPS60535B2 (en) 1978-04-21 1978-04-21 variable valve engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4670178A JPS60535B2 (en) 1978-04-21 1978-04-21 variable valve engine

Publications (2)

Publication Number Publication Date
JPS54140014A true JPS54140014A (en) 1979-10-30
JPS60535B2 JPS60535B2 (en) 1985-01-08

Family

ID=12754665

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4670178A Expired JPS60535B2 (en) 1978-04-21 1978-04-21 variable valve engine

Country Status (1)

Country Link
JP (1) JPS60535B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57182205U (en) * 1981-05-15 1982-11-18

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57182205U (en) * 1981-05-15 1982-11-18
JPS6345521Y2 (en) * 1981-05-15 1988-11-25

Also Published As

Publication number Publication date
JPS60535B2 (en) 1985-01-08

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