000			01686nab a2200205 4500
005			20260520000837.0
008			260224s2009 xxu
245	0	0	_aInvestigation on the effect of port-injected methanol on the perfomance and emission of a diesel engine at different engine speeds
260			_a _b _cnov./dic. 2009
270			_a08/06/2010 ; 08/06/2010
300			_a10 p. ; 5684-5694
520			_aTranscripción del resumen del autor. This study is aimed at investigating the effect of port-injected methanol on the performance and emissions of a diesel engine under different engine loads and engine speeds. Experiments were performed on a four-cylinder diesel engine operating at three engine speeds and five engine loads for each speed. The results show that when methanol is injected into the intake port of the diesel engine, the brake thermal efficiency decreases at low engine loads but has no significant change at medium to high engine loads. There is also a reduction of NOx and particulates but a significant increase in CO, HC, NO2, unburned methanol, and formaldehyde emissions. The application of port-injected methanol shows potential greenhouse benefits only at high engine loads with a high level of fumigation methanol. With a diesel oxidation catalyst, the HC, CO, unburned methanol, and formaldehyde emissions are significantly reduced when the exhaust gas temperature is sufficiently high. The results are consistent at each engine speed.
581			_a6
773	0		_tEnergy & fuels _g23
942			_cARTICULO
100	1		_aCheung, C.S. _938136
100	1		_aZhang, Z.H. _942322
100	1		_aChan, T.L. _942323
999			_c170805 _d170805