justhavnfun
Member
Trying to measure and understand fundamental aspects of unthrottled operation at low- and part-load operating conditions by means of a Fully Variable Valve control strategy.
For an internal combustion engine, throttling the intake air represents a waste of energy. The aim of the stratified charge Direct Injection Spark Ignition engine is to operate the engine with a wider-open throttle for part and low load conditions reducing pumping losses. This strategy poses important and costly challenges in the aftertreatment of the exhaust gases, primarily NOx. In contrast, Homogenous Charge Direct Injection still permits robust three-way catalyst technology to be used to treat exhaust emissions. In order to control the output of the engine, the ingested air must be regulated. By means of a Fully Variable Valve Train (FVVT), the intake air can be throttled at the poppet valves, eliminating the need for a conventional throttle plate. This research will seek to develop a new combustion system employing the best attributes of FVVT and Homogenous DIS. Any insight would be helpful and appreciated. Thanks.
For an internal combustion engine, throttling the intake air represents a waste of energy. The aim of the stratified charge Direct Injection Spark Ignition engine is to operate the engine with a wider-open throttle for part and low load conditions reducing pumping losses. This strategy poses important and costly challenges in the aftertreatment of the exhaust gases, primarily NOx. In contrast, Homogenous Charge Direct Injection still permits robust three-way catalyst technology to be used to treat exhaust emissions. In order to control the output of the engine, the ingested air must be regulated. By means of a Fully Variable Valve Train (FVVT), the intake air can be throttled at the poppet valves, eliminating the need for a conventional throttle plate. This research will seek to develop a new combustion system employing the best attributes of FVVT and Homogenous DIS. Any insight would be helpful and appreciated. Thanks.
