In urban roads the engine speed and the load vary suddenly and frequently, resulting in increased exhaust emissions. In such operations, the effect of air injection technique to access the transient response of the engine is of great interest. The effectiveness of air injection technique in improving the transient response under speed transient is investigated in detail [1]; however, it is not evaluated for the load transients. Load step demand of the engine is another important event that limits the transient response of the turbocharger. In the present study, response of a heavy-duty turbocharged diesel engine is investigated for different load conditions. Three cases of load transients are considered: constant load, load magnitude variation, and load scheduling. Air injection technique is simulated and after optimization of injection pressure based on orifice diameter, its effect on the transient response is presented. The results reveal that air injection into the intake manifold is an effective technique to improve the turbo lag of a heavy-duty turbocharged diesel engine under the transient conditions of load.
Transient Response of Turbocharged Compression Ignition Engine under Different Load Conditions
Sae Int. J. Engines
Sae International Journal of Engines ; 17 , 1 ; 73-101
2023-07-26
29 pages
Conference paper
English
Computer Simulation of a Turbocharged Diesel Engine Operating Under Transient Load Conditions
SAE Technical Papers | 1971
|Performance Prediction for the Highly Turbocharged Compression Ignition Engine
SAE Technical Papers | 1963
|Turbocharged S.I. Engine Simulation under Steady and Transient Conditions
SAE Technical Papers | 1988
|Turbocharged si engine simulation under steady and transient conditions
Automotive engineering | 1988
|Turbocharged Spark Ignition Engine Simulation
SAE Technical Papers | 1984
|