Development of Four Cylinder SR Engine
901714
09/01/1990
- Event
- Content
- The SR engine is a new medium-size, all aluminum (cylinder block, head, rocker cover and oil pan) in-line 4-cylinder gasoline powerplant developed as a replacement for CA engine in Nissan's compact passenger cars. The development aim set for this engine was to achieve excellent power output and ample torque in the middle-and high-speed ranges, as well as a clear, linear engine sound up to the red zone. These performance targets have been achieved through the use of the 4-valve-per-cylinder DOHC design featuring a Y-shaped valve rocker arm system. This system allows a straight intake port for high power output and a narrow valve angle for a compact combustion chamber. The result is ample torque output as well as good fuel economy.
- Pages
- 11
- Citation
- Sobue, A., Kawamura, T., and Ninomiya, T., "Development of Four Cylinder SR Engine," SAE Technical Paper 901714, 1990, https://doi.org/10.4271/901714.