Browse Publications Technical Papers 2001-01-3629
2001-09-24

The Performance of a Heavy Duty Diesel Engine with a Production Feasible DME Injection System 2001-01-3629

Over the last few years there has been much interest in DiMethyl Ether (DME) as an alternative fuel for diesel cycle engines. It combines the advantages of a high cetane number with soot free combustion, which makes it eminently suitable for compression ignition engines. However, due to the fact that it is a gas under ambient conditions, it requires special fuel handling and a specially designed fuel injection system, which until recently, was not available.
The use of the digital hydraulic operating system (DHOS), combined with a fuel handling system designed to cope with the properties of DME, enables the fuel to be safely and conveniently handled, In addition, the flexibility of the injection system enables injection pressures to be chosen according to the needs of the combustion.
Tests results on a single cylinder heavy duty test engine show that the fuel system enables the benefits in combustion and emissions associated with DME to be realised, while using a fuel injection and handling system which has potential for production.

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