Studies Regarding the Evolution of Pollutant Emissions Related to Certain Transitory Condition of an Internal Combustion Engine Using Mobile Measuring Systems

2016 ◽  
Vol 823 ◽  
pp. 303-308 ◽  
Author(s):  
Ilie Dumitru ◽  
Florin Colici ◽  
Alexandru Mihai Dima ◽  
Vladimir Mărdărescu

The internal combustion engine that equips a vehicle is a complex assembly of mechanical parts and electronics that controls almost every system. The electronic part of the vehicle gives the opportunity to observe and control what happens with the engine during function. The present paper follows the evolution of the pollutant emissions in relation with some transitory regimes of the car.

1986 ◽  
Vol 108 (1) ◽  
pp. 74-79
Author(s):  
S. Thompson

A procedure based on measured step responses, is presented for the pseudo-decoupling of basically linear, nonoscillatory, multivariable plant. The method generates pre- and post-compensator matrices that will tend to make an otherwise nondominant plant diagonally dominant. Once this is achieved, each loop is then tuned on an individual basis using one of the classical on-line methods, thus eliminating the need for a model. The method is illustrated by means of two examples. The first demonstrates the design procedure and the second reports on the application of the method in controlling the power generated by an internal combustion engine.


Author(s):  
Andreas A. Malikopoulos ◽  
Panos Y. Papalambros ◽  
Dennis N. Assanis

Advanced internal combustion engine technologies have increased the number of accessible variables of an engine and our ability to control them. The optimal values of these variables are designated during engine calibration by means of a static correlation between the controllable variables and the corresponding steady-state engine operating points. While the engine is running, these correlations are being interpolated to provide values of the controllable variables for each operating point. These values are controlled by the electronic control unit to achieve desirable engine performance, for example in fuel economy, pollutant emissions, and engine acceleration. The state-of-the-art engine calibration cannot guarantee continuously optimal engine operation for the entire operating domain, especially in transient cases encountered in driving styles of different drivers. This paper presents the theoretical basis and algorithmic implementation for allowing the engine to learn the optimal set values of accessible variables in real time while running a vehicle. Through this new approach, the engine progressively perceives the driver’s driving style and eventually learns to operate in a manner that optimizes specified performance indices. The effectiveness of the approach is demonstrated through simulation of a spark ignition engine, which learns to optimize fuel economy with respect to spark ignition timing, while it is running a vehicle.


2019 ◽  
Vol 24 (3) ◽  
pp. 510-529 ◽  
Author(s):  
D. A. Carbot-Rojas ◽  
Ricardo F. Escobar-Jiménez ◽  
J. F. Gómez-Aguilar ◽  
J. García-Morales ◽  
A. C. Téllez-Anguiano

1998 ◽  
Vol 26 (3) ◽  
pp. 223-233
Author(s):  
Julio Barros Guadalupe ◽  
Victor M. Moreno Sáiz ◽  
José Isla Romero

This paper presents the structure and operation of an integrated data acquisition and control system for analysis of the performance characteristics of an internal combustion engine in a testbed. The system allows on-line monitoring of different engine parameters and also enables us to obtain automatically the operating curves of the engine and to compare them with those provided by the manufacturer in order to assess the condition of the engine. With this system, engineering and graduate students are able to monitor the engine continuously and to check the effect of different working conditions on its performance.


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