EFFICIENCY CHARACTERISTICS OF A NEW QUASI-CONSTANT VOLUME COMBUSTION SPARK IGNITION ENGINE
Abstract
A zero dimensional model has been used to investigate the combustion performance of a four cylinder petrol engine with unconventional piston motion. The main feature of this new spark ignition engine concept is the realization of quasi-constant volume during combustion process. Presented mechanism is designed to obtain a
specific motion law which provides better fuel consumption of internal combustion engines. These advantages over standard engine are achieved through synthesis of unconventional piston mechanism. The numerical calculation was performed for several cases of different piston mechanism parameters, compression ratio and engine
speed. Calculated efficiency and power diagrams are plotted and compared with performance of ordinary spark ignition engine. The results show that combustion
during quasi-constant volume has significant impact on improvement of efficiency.
The main aim of this paper is to find a proper kinematics parameter of unconventional piston mechanism for most efficient heat addition in spark ignition engines.
Dates
- Submission Date2012-05-30
- Revision Date2012-08-27
- Acceptance Date2012-09-05
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Volume
17,
Issue
1,
Pages119 -133