A variable valving system was developed. This system has two cam profiles, one for low speed and one for high speed. A 1.2-litre DOHC experimental engine using this system was made and mounted in the body of a 2-litre class passenger car. Test results of this car were compared to those of the same car with its original engine. The test car showed better results in every area of driving performance, in mode-fuel-economy and in noise tests. This paper presents the mechanism, operation and test results of this variable valving system, the 1.2-litre experimental engine and this passenger car.
A high power, wide torque range, efficient engine with a newly developed variable-value lift and timing mechanism
Leistungsfaehiger, wirtschaftlicher Motor mit grossem Drehmomentbereich, neuer Ventilsteuerung mit variablem Hub und variablen Oeffnungszeiten
SAE-Papers ; Mar ; 1-11
1989
11 Seiten, 19 Bilder, 3 Tabellen, 7 Quellen
Conference paper
English
Automotive engineering | 1989
|SAE Technical Papers | 1989
|Automotive engineering | 1989
|SAE Technical Papers | 1989
|Introduction to newly developed Nissan VVL (Variable Valve Lift & timing) engine
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