Abstract
The performance tests of an electronically controlled high pressure common rail diesel engine and of the car mounted with an engine of this type fuelled by biodiesel–diesel mixed fuel with different mixing ratios are conducted, and its power outputs, fuel economies and emissions are measured and compared with the one of diesel operation. The results indicate that: when the load is 2200 r/min, the effective specific energy consumption decreases, NOx emission increases; smoke emission decreases at high load and keeps almost no change at low and middle loads; HC emission decreases at low and middle loads and keeps the same at high loads, and CO emission maintains the same; at full load characteristics, the power output increases slightly, HC and smoke emissions decrease, CO and NOx emissions increase.
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