JPS5744715A - Intake-valve system for engine - Google Patents

Intake-valve system for engine

Info

Publication number
JPS5744715A
JPS5744715A JP55119947A JP11994780A JPS5744715A JP S5744715 A JPS5744715 A JP S5744715A JP 55119947 A JP55119947 A JP 55119947A JP 11994780 A JP11994780 A JP 11994780A JP S5744715 A JPS5744715 A JP S5744715A
Authority
JP
Japan
Prior art keywords
engine
arm
lift
speed
roller
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
JP55119947A
Other languages
Japanese (ja)
Other versions
JPS6114325B2 (en
Inventor
Tatsuro Oda
Masashi Maruhara
Akio Nagao
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.)
Mazda Motor Corp
Original Assignee
Mazda Motor Corp
Toyo Kogyo Co Ltd
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 Mazda Motor Corp, Toyo Kogyo Co Ltd filed Critical Mazda Motor Corp
Priority to JP55119947A priority Critical patent/JPS5744715A/en
Publication of JPS5744715A publication Critical patent/JPS5744715A/en
Publication of JPS6114325B2 publication Critical patent/JPS6114325B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Valve Device For Special Equipments (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)

Abstract

PURPOSE: To prevent over-swirl and improve anti-knocking performance of an engine, by making the lift of a variable-lift intake valve maximum at the time of low-speed, high-load operation of the engine.
CONSTITUTION: Through the detection of engine load P and engine speed Q, an output signal is given to a control circuit 28 at the time of low-speed, full-load operation of the engine. By the control circuit 28, a reversible motor 27 is turned in normal or reverse direction depending on the flow rate of intake air. This causes a gear 25 to turn by the aid of a worm gear 26, so that a roller 19 supported by a lever 24 causes a relative displacement to an arm 18. This displacement of the roller 19 changed the position of fulcrum point A of the arm 18, so that the lever ratio of the arm 18 is varied and the lift of an intake valve 5 is change resultantly.
COPYRIGHT: (C)1982,JPO&Japio
JP55119947A 1980-08-29 1980-08-29 Intake-valve system for engine Granted JPS5744715A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55119947A JPS5744715A (en) 1980-08-29 1980-08-29 Intake-valve system for engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55119947A JPS5744715A (en) 1980-08-29 1980-08-29 Intake-valve system for engine

Publications (2)

Publication Number Publication Date
JPS5744715A true JPS5744715A (en) 1982-03-13
JPS6114325B2 JPS6114325B2 (en) 1986-04-18

Family

ID=14774110

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55119947A Granted JPS5744715A (en) 1980-08-29 1980-08-29 Intake-valve system for engine

Country Status (1)

Country Link
JP (1) JPS5744715A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61252850A (en) * 1985-04-30 1986-11-10 Mazda Motor Corp Engine equipped with valve-lift characteristic varying apparatus
US4708101A (en) * 1984-12-20 1987-11-24 Nissan Motor Co., Ltd. Driving apparatus for intake and exhaust valves of internal combustion engine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4708101A (en) * 1984-12-20 1987-11-24 Nissan Motor Co., Ltd. Driving apparatus for intake and exhaust valves of internal combustion engine
JPS61252850A (en) * 1985-04-30 1986-11-10 Mazda Motor Corp Engine equipped with valve-lift characteristic varying apparatus

Also Published As

Publication number Publication date
JPS6114325B2 (en) 1986-04-18

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