VARIABLE VALVE SYSTEM FOR INTERNAL COMBUSTION ENGINE

PROBLEM TO BE SOLVED: To reduce pumping loss, friction, and fuel consumption by partially designating only number 2 and number 3 cylinders in a cylinder line as rest cylinders, with a relatively simple structure. SOLUTION: When a drive shaft 15 rotates in association with an engine, a rocking cam 13...

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Bibliographic Details
Main Authors TAKEDA KEISUKE, GOTO TETSUAKI
Format Patent
LanguageEnglish
Published 14.11.2000
Edition7
Subjects
BLASTING
COMBUSTION ENGINES
CONTROLLING COMBUSTION ENGINES
CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
ENGINE PLANTS IN GENERAL
HEATING
HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
LIGHTING
MACHINES OR ENGINES IN GENERAL
MECHANICAL ENGINEERING
STEAM ENGINES
WEAPONS
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Summary:PROBLEM TO BE SOLVED: To reduce pumping loss, friction, and fuel consumption by partially designating only number 2 and number 3 cylinders in a cylinder line as rest cylinders, with a relatively simple structure. SOLUTION: When a drive shaft 15 rotates in association with an engine, a rocking cam 13 oscillates through an eccentric cam 16, a ring-like link 21, a rocker arm 19, and a rod-like link to operate an intake valve and an exhaust valve to open/close. A first control cam 18, to which the rocker arm 19 is externally engaged, is fixed to the outer peripheral face of a main control shaft 17 extending in a cylinder line direction. A sub-control shaft 25 is externally and rotatably engaged with the outer peripheral of the main control shaft 17 is partially provided for the number 2 and the number 3 cylinders. A second control cam 26, to which the rocker arm 19 is externally engaged, is fixed to the outer peripheral of the sub-control shaft 25.
Bibliography:Application Number: JP19990123309