Speed control of hydrodynamic dynamometers for internal combustion engine test benches

2012 ◽  
Author(s):  
T. E. Passenbrunner ◽  
H. Trogmann ◽  
H. Kokal ◽  
L. del Re
Keyword(s):  
Internal Combustion Engine ◽  
Combustion Engine ◽  
Speed Control ◽  
Internal Combustion ◽  
Engine Test

Improved throttle valve modeling for spark-ignition engine simulations

2018 ◽  
Vol 233 (6) ◽  
pp. 1614-1622 ◽  
Author(s):  
Elie Haddad ◽  
David Chalet ◽  
Pascal Chesse
Keyword(s):  
Internal Combustion Engine ◽  
Discharge Coefficient ◽  
Test Bench ◽  
Combustion Engine ◽  
Internal Combustion ◽  
Simulation Software ◽  
Spark Ignition Engine ◽  
Engine Test ◽  
Engine Simulation ◽  
Throttle Valve

Automotive manufacturers nowadays are constantly working on improving their internal combustion engines’ performance by reducing the fuel consumption and emissions, without compromising the power generated. Manufacturers are therefore relying on virtual engine models that can be run on simulation software in order to reduce the amount of time and costs needed, in comparison with experiments done on engine test benches. One important element of the intake system of an internal combustion engine is the throttle valve, which defines the amount of air reaching the plenum before being drawn into the cylinders. This article discusses a widely used model for the estimation of air flow rate through the throttle valve in an internal combustion engine simulation. Experiments have been conducted on an isolated throttle valve test bench in order to understand the influence of different factors on the model’s discharge coefficient. These experiments showed that the discharge coefficient varies with the pressure ratio across the throttle valve and with its angle. Furthermore, for each angle, this variation can be approximated with a linear model composed of two parameters: the slope and the Y-Intercept. These parameters are calibrated for different throttle valve angles. This calibration can be done using automotive manufacturers’ standard engine test fields that are often available. This model is then introduced into an engine simulation model, and the results are compared to the experimental data of a turbocharged engine test bench for validation. They are also compared with a standard discharge coefficient model that varies only with the throttle valve angle. The results show that the new model for the discharge coefficient reduces mass flow estimation errors and allows expanding the applications of the throttle valve isentropic nozzle model.

Design of a Model-Reference Adaptive Control for an Internal Combustion Engine

1973 ◽  
Vol 6 (4) ◽  
pp. 167-173 ◽  
Author(s):  
G. E. Harland ◽  
K. F. Gill
Keyword(s):  
Adaptive Control ◽  
Control System ◽  
Internal Combustion Engine ◽  
Engine Speed ◽  
Dynamic Behaviour ◽  
Combustion Engine ◽  
Speed Control ◽  
Internal Combustion ◽  
Model Reference ◽  
Model Reference Adaptive

An internal combustion engine speed control system has been investigated to determine the possibility of using a model-reference adaptive control device to maintain constant dynamic behaviour of engine speed irrespective of engine load and environmental conditions. A conventional type of speed control arrangement has been used in the primary loop and an auxiliary loop has been introduced which biases the engine throttle mechanism by an amount which is proportional to the derivative of engine speed. The constant of proportionality is the parameter which is being changed by the adaptive loop. The results of the engine tests showed good correlation with those obtained in a simulation study and clearly showed that for certain installations the incorporation of a model-reference loop into a conventional speed control system would result in improved engine dynamic behaviour.

scholarly journals Direct multivariable controller tuning for internal combustion engine test benches

2014 ◽  
Vol 29 ◽  
pp. 115-122 ◽  
Author(s):  
Thomas E. Passenbrunner ◽  
Simone Formentin ◽  
Sergio M. Savaresi ◽  
Luigi del Re
Keyword(s):  
Internal Combustion Engine ◽  
Combustion Engine ◽  
Internal Combustion ◽  
Engine Test ◽  
Controller Tuning ◽  
Multivariable Controller
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