Performance Evaluation of a Low-Grade Low-Heat-Rejection Diesel Engine with Crude Pongamia oil

Table 7

Variation of PP, MRPR, TOPP, and TOMRPR with Injection Timing and Injection Pressure at the Peak Load Operation of CE and LHR Engine with Vegetable Oil Operation.

		PP (bar)				MRPR (bar/deg)				TOPP (deg)				TOMRPR (deg)
Injection timing (°bTDC)/test fuel	Engine version	Injection pressure (bar)				Injection pressure (bar)				Injection pressure (bar)				Injection pressure (bar)
		190		270		190		270		190		270		190		270
		NT	PT	NT	PT	NT	PT	NT	PT	NT	PT	NT	PT	NT	PT	NT	PT
27/diesel	CE	50.4	—	53.5	—	3.1	—	3.4	—	9	—	8	—	0	0	0	0
	LHR	48.1	—	53.0	—	2.9	—	3.1	—	10	—	9	—	0	0	0	0
27/CPO	CE	45.9	47.9	48.1	49.4	2.1	2.2	2.8	2.9	12	11	12	10	1	1	1	1
	LHR	58.8	59.7	62.1	63.8	3.2	3.3	3.4	3.5	11	10	10	9	1	1	1	1
30/CPO	LHR	60.5	61.8	64.1	64.8	3.3	3.4	3.5	3.6	10	9	9	9	0	0	0	0
32/CPO	CE	50.4	51.7			3.0	3.1			11	10			0	0

CPO: crude pongamia oil, CE: conventional engine, LHR: low heat rejection, NT: normal temperature, PT: preheated temperature.