Diagnosis of Gasoline Injection Engine and Fault Tolerant Control

Abstract

The paper presents some considerations regarding the diagnosis and control of a gasoline injection engine for motor vehicles. The growing importance of diagnosis is highlighted in the conditions in which the practice has shown that there are always some faults, the fault being defined as a deviation of a parameter or a variable from its nominal value. Here are some solutions used in the gasoline injection engine, related to fault tolerant control. It is exemplified by treating the air pressure control system admitted in the engine cylinders of the Audi A6 car, targeting the pressure sensor in the intake manifold. Keywords: motor vehicle, diagnosis, fault tolerant control (FTC), PID controller, fuzzy logic, control reconfiguration

RST Switching Bi-controller Based Flatness for an Electronic Throttle Valve

“…It's worth mentioning that the majority of automotive engines are using the ETV in order to control the airflow rate of the internal combustion by regulating the throttle plate position, [1,26,30,32,35,37,38]. The throttle valve is composed by a throttle plate and a motor which forces the plate to rotate to a defined angle and then to return to its original position, due to the presence of a spring.…”

“…The throttle plate's angular position has to follow a desired trajectory, as determined by an accelerator pedal, to correspond to the current engine load. It results in enhancements in vehicle drivability, fuel efficiency and safety [1,26,32,35,37,38]. Several control strategies have been proposed in the literature for complex dynamic systems [8] and especially to control the electronic throttle, including the Proportional-Integral-Derivative (PID) controller and a feedback compensator for friction and limp-home effects as discussed in [12].…”

“…In [42], an adaptive backstepping sliding mode control based on the Radial Basis Function Neural Network (RBFNN) was proposed for vehicle's wheel slip tracking. Referring to [24,35], the diagnosis of gasoline injection engines and fault tolerant control based on fuzzy logic control were studied. In reference [5], an engine's ETV position estimation was achieved through the use of a neural network-based virtual sensor.…”

“…Even within an optimal control scheme [38], an appropriate operation of ETVs is not possible under fault occurrences. Such an issue has not been sufficiently studied in the literature [35,36]. More interest should be dedicated to suggest specific diagnosis methods for such systems.…”