THE ANALIZE OF SPECIFIC PARAMETERS FOR SPARK IGNITED ENGINE OPERATIONAL CYCLE DEPENDING ON ALTITUDE
The spark ignited engine is yet one of the most popular thermo-chemical energy converter worldwide used for propelling over 500 million cars today. Some of these vehicles are used in different geographic conditions that alter the engine operating regime usually by increasing fuel consumption and consequently the air pollution in order to maintain the torque and power output performances requested through the driver pedal. Because atmospheric pressure at high altitudes is lower in comparison with the see level, spark ignited engine’s operating conditions are tremendously changed in a 2000 meters of altitude range. The present paper unveils some of the particular engine operating conditions at different altitudes of the road and proposes some solutions and developing perspectives concerning the limitations and problems that occur during field operation. In order to obtain the same power and torque performances at any altitude level the engine operating parameters have to be the same at all times and at all altitudes. By field experimentation the research shows where the problems are; on the other hand, by analyze and interpretation it brings up the proper solutions to the inconveniences.
Keywords: intake, fuel injection, spark-ignited engine, engine performance
