Abstract:
The invention relates to a hardware architecture of a system (1) for driving injection in internal combustion engines (2), of the type intended to cooperate with an engine electronic control unit (ECU) by driving corresponding injection drivers (3). The system (1) comprises:
a first I/O interface module (4) embedding a plurality of registers and receiving signals from said engine ECU; a second module (5) bi-directionally connected to the first module (4) from which it receives information at least on the injection times and the quantity of fuel to be injected for generating driving signals for said injection drivers (3), thereby actuating a desired injection profile; a third module (6) capable of emitting an interrupt signal toward said control unit (ECU) on the basis of signals received by said second module (5).
Abstract:
In a process for performing fuzzy procedures in processing devices, of the type which provides for calculating a degree of activation (α,α') of a fuzzy proposition represented by input values (x), having a fuzzy set associated to a triangular or trapezoidal membership function (M,M l ,M r ,M b ,M e ,T), said triangular or trapezoidal membership function (M,M l ,M r ,M b ,M e ,T) being defined by a definition range (l 0 ,r 0 ;l 1 ,r 1 ) of said input values (x) and an abscissa of the maximum value (c 0 ) assumed by said membership function (M,M l ,M r ,M b ,M e ,T), there is provided storing solve values (l,c,r) corresponding to said range of definition (l 0 ,r 0 ;l 1 ,r 1 ) and to said abscissa of the maximum value (c 0 ) and calculating said degree of activation (α,α') as a function of said solve values (l,c,r) stored, said operation of storing solve values (l,c,r) comprising storage of the values measured on the abscissa (c 0 ,l 0 ,r 0 ,c 0 r 0 , l 0 c 0 ;r 1 ,l 1 ,c 0 r 1 , l 1 c 0 ) and further comprising storage of at least one value (y 1 ,y r ) measured on the ordinate and corresponding to said membership function (M,M l ,M r ,M b ,M e ,T), instead of at least one of said values measured on the abscissa (c 0 r 1 ,l 1 c 0 ), if at least one of said values (c 0 r 1 ,l 1 c 0 ) measured on the abscissa assumes an absolute value greater than a maximum representable value (n).
Abstract:
The invention relates to an electronic device architecture for determining the operating phase of an internal combustion motor (2), of the type structured for cooperating with an electronic motor control unit (ECU) and inputting a signal issued from a sensor (8) of a phonic wheel (7) associated with a camshaft (4) of the motor (2). This device (1) has the task of computing the operating phase by analysing the signal from the sensor of the camshaft phonic wheel (7), so as to release the electronic motor control unit (ECU) from monitoring the phonic wheel signal, in order to lighten its computational load, and to enable the processing of signals from a variety of phonic wheels commonly used in the automotive industry.
Abstract:
The invention relates to a hardware architecture of an ignition and/or injection managing system (1) for an internal combustion engine (2), of the type structured to cooperate with an electronic engine control unit (ECU) (3). The managing system comprises:
a first module (4) structured to process electric signals from which the angular position of the engine driving shaft can be obtained; a second module (5) structured to process electric signals from which the cycle phase of the engine (2) can be obtained; a third module (6) structured to generate suitable signals for driving injector "drivers" (7) such that the injection profile stored inside the module is actuated; and a fourth module (13) enabling the third module (6) and receiving signals from the first (4) and second (5) modules and from the third module itself (6).