Development of Nissan's New Generation 4-Cylinder Engine
2001-01-0328
03/05/2001
- Event
- Content
- This paper describes the new inline 4-cylinder QR engine series that is available in 2.0-liter and 2.5-liter versions. The next-generation QR engine series incorporates new and improved technologies to provide an optimum balance of power, quietness and fuel economy. Its quiet operation results from the adoption of a compact balancer system and the reduced weight of major moving parts. Power and fuel economy have been enhanced by a two-stage cooling system, a continuous variable valve timing control system, a dual close coupled catalyst system, electronic throttle control and an improved direct-injection system. The latter includes an improved combustion chamber concept and improved fuel spray characteristics achieved by driving the injector by battery voltage. A lightweight and compact engine design has been achieved by adopting a high-pressure die cast aluminum cylinder block, resin intake manifold and rocker cover and a serpentine belt drive.
- Pages
- 9
- Citation
- Inamijima, S., Ninomiya, T., Kawai, S., Igarashi, T. et al., "Development of Nissan's New Generation 4-Cylinder Engine," SAE Technical Paper 2001-01-0328, 2001, https://doi.org/10.4271/2001-01-0328.