发明名称 |
MULTI-FUELLING AN ENGINE |
摘要 |
A compression ignition engine is supplied with afirst fuelin a flow of air and a second fuel is injectedinto the combustion chamber. The first fuel comprises a more volatile fuel than dieselsuch as ethanol, LPG or other combustible gas; the second fuel comprises diesel or biodiesel; and the second fuel is injected in multiple pulses in each ignition cycle with the first pulse acting as a pilot pulse to trigger ignition, and the timing of the second pulse being such as to modify the temperature through evaporation of the second fuel and thereby reduce the combustion temperature and mitigate knock susceptibility. Preferably the pilot pulse is followed by a single further pulse of the second fuel in the ignition cycle. The engine may be controlled to operate in two different modes, one mode for light and medium load conditions when there is only a pilot pulse injection of the second fuel which reduces NOx and soot emissions, and the other mode for higher load conditions when there is a pilot pulse injection followed by a main pulse injection of the second fuel. The first fuel may comprise bioethanol and or one or more ofthe following: ethanol, butanol, propanol, lpg, natural gas, hydrogen. |
申请公布号 |
WO2009106647(A1) |
申请公布日期 |
2009.09.03 |
申请号 |
WO2009EP52476 |
申请日期 |
2009.03.02 |
申请人 |
INSPECS LIMITED;COURTOY, PIERRE;SMITH, ANDREW, FRANCES, GAMBLE;GREENHALGH, DOUGLAS |
发明人 |
COURTOY, PIERRE;SMITH, ANDREW, FRANCES, GAMBLE;GREENHALGH, DOUGLAS |
分类号 |
F02D19/10;F02D19/08;F02D41/00;F02D41/40 |
主分类号 |
F02D19/10 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|