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New Four Valves Per Cylinder Basic Engine for Passenger Car
Technical Paper
871177
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Language:
English
Abstract
Through the experience in developing several 4-valve sporty engines, we have had an idea that 4-valve technology regarded as one of sporty engines may be applied to a standard engine of a passenger car. Making use of the superior characteristics of 4-valve technology, combustion chamber design and valve train system were completely refined for a standard engine. Higher torque in low to middle speed range and good fuel economy, important features in practical use, were pursued as the prior target of development. As a passenger car engine, comfortable sound in passenger compartment is an important feature as well as high performance and good fuel economy. With these concepts, we have developed the 3S-FE, 2-liter, 4-valve engine which has achieved 5.1& torque, 18.6% horse power and 9.7% Fuel consumption (highway mode) gains compared with the original 2S-E, 2-liter, 2-valve engine. A newly developed bending and torsional damper pulley to reduce the engine vibration, realized the quietness and comfort in passenger compartment.
This paper describes the concept of 4-valve technology in a standard engine and the details of the newly developed 3S-FE enigne with these concepts.
Authors
Citation
Sato, M., Konishi, M., Kamimura, S., Watanabe, H. et al., "New Four Valves Per Cylinder Basic Engine for Passenger Car," SAE Technical Paper 871177, 1987.Also In
References
- Kimbara Y. Konishi M. Kitagawa K. Watanabe H. Tomita T. ‘Innovative Toyota Standard Engine Equipped with 4-Valve’ SAE 870352