Experimental investigation and performance comparison of thermal insulation on a diesel engine liner

Book · Tue Jul 01 04:00:00 EDT 1997

OSTI ID:489057

Samuel, G R ^[1]

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1. Univ. of Tulsa, OK (United States)

The ever increasing need for conservation of fuel is an important factor in the design of diesel engines. The uncooled adiabatic engine emerges as a breakthrough in engine technology. Over the past few years, there have been many documented cases of successful experimentation to achieve this objective. As the number of various applications increase, it is necessary to pay close attention to improve the performance and efficiency of the engines. This paper will provide an insight into the experimental work carried out to investigate the effects of thermal insulation on a Diesel engine liner. As a first phase of experiment, performance of a ``Partially Insulated Engine ``was studied with the thermal insulation of the liner. Performance of a partially insulated engine was carried out in two different stages. First, flame sprayed ceramic coated liners of Alumina and Partially Stabilized Zirconia were tested. Second, air as the insulating medium was tested. An air gap liner with air was used as a thermal barrier around the conventional liner. The experiments were carried out in a single cylinder, four stroke, direct injection, water cooled diesel engine. The experiments were conducted at different loads and different injection timings. Test results showed that, the partially insulated engine has advantages over the conventional engine in respect of thermal efficiency, fuel consumption rate and heat losses. The necessity of reoptimizing injection timing was also examined.

• OSTI ID: 489057
• Report Number(s): CONF-970146--; ISBN 1-890277-04-5
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
AIR CURTAINS
ALUMINIUM OXIDES
DIESEL ENGINES
EXPERIMENTAL DATA
FUEL CONSUMPTION
HEAT LOSSES
LINERS
PERFORMANCE
THERMAL EFFICIENCY
THERMAL INSULATION
ZIRCONIUM OXIDES