Abstract
Prior to full electric conversion, internal combustion engines will still maintain a paramount position in heavy goods and earth-moving vehicles. The most promising, cleaner alternative to fossil fuels is biodiesel. While it does not require alterations in the engine design, hence no major overhaul of existing infrastructure, biodiesel is more sustainable and clean-burning than petro-diesel. Extensive research has been reported on the effect of biodiesel blends, on the operational characteristics of compression ignition (CI) engines as well as the emissions behaviour of such engines. The performance characteristics of CI engines under transient operational conditions with Biodiesel blends has had limited attention so far from researchers. In the present work, transient performance characteristics of a CI engine has been evaluated for various biodiesel blends and its effects on performance behaviour have been quantified. In addition, emission footprints of CI engines under various transient operational conditions have also been enumerated.
Highlights
Introduction on the Transient Performance ofBiodiesel blends are becoming increasingly popular as an alternative to conventional fossil fuels to supplement increasing worldwide energy demand [1]
It is evident from the discussion that various biodiesel blends can be used with conventional engines there may be variations in operational characteristics and emission behaviour because of subtle differences in the way biodiesel blends interact with the engine system as well as in the combustion mechanism
Synthetic speed and torque test cycles were developed for studying the effect of transients in compression ignition (CI) engine performance as well as the engine’s emission characteristics
Summary
The tests in a CI engine were carried out within the Advanced Automotive Laboratory, at the University of Huddersfield. The facility possesses a transient testing unit which has a 200 kW AC Dynamometer. It has a 4-Quadrant Regenerative Drive unit possessing motoring and absorbing capability. The. CI engine is direct injection with four cylinders, four strokes, and is turbo-charged. The bore is 103 mm while the stroke is 132 mm, and it has 4.4 litres of engine displacement. The engine was wholly instrumented, the steady and transient cycles were programmed with the CADET software integrated with the engine. Instrumented, the steady and transient cycles were programmed with the CADET software integrated with the engine
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