Experimental Study Regarding the Computation of the Effective Power of a Spark-Ignition

Abstract:

Besides the actual average pressure, the actual specific fuel consumption and the actual performance, the actual torque is one of the characteristic indicators considered when designing a spark-ignition engine. In order to determine the effective power, special and quite expensive benches are required. This paper intends to determine certain computational relations for the determination of the actual torque both for a standard engine and for a ceramic-coated engine. In order to obtain the experimental results, we used the spark-ignition engine 810-99, and the actual torque was determined on a specialized bench. All measurements were performed at 28°C air temperature, and 740mmHg atmospheric pressure, the temperature of the cooling liquid being 82÷91°C and the oil temperature 92÷116°C. For the engine with ceramic crown’s piston, was maintained the same compression ratio, and the atmospheric pressure and temperature conditions were close to those of the standard engine. Both for the standard engine and for the ceramic engine all measurements were performed under full load. After computer processing the experimental data, empirical formulas were determined for the computation of the effective power both for the ceramic engine and for the standard engine.

• Periodical: Applied Mechanics and Materials (Volume 657)
• Pages: 704-707
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.657.704
• Online since: October 2014
• Authors: Ioan Radu Șugar*, Mihai Banica
• Keywords: Ceramic, Engine, Piston, Power, Speed

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