The effects of load control with port throttling at idle
Conference
·
OSTI ID:5493851
This paper describes an experimental and analytical study conducted to investigate the effects of load control with port throttling on stability and fuel consumption at idle. With port throttling, the pressure in the intake port increases during the valve-closed period due to flow past the throttle. If the pressure in the port recovers to ambient before the valve overlap period, back flow into the intake system from the cylinder is eliminated. This allows increased valve overlap to be used without increasing the residual mass fraction in the cylinder.
- OSTI ID:
- 5493851
- Report Number(s):
- CONF-890240--
- Country of Publication:
- United States
- Language:
- English
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