Fuel distribution control system for an internal combustion engine
First Claim
1. In combination with an internal combustion engine fuel control system including a fuel control computer for generating fuel delivery signals in response to the operational parameters of the engine, means for delivering fuel to the engine in response to the fuel delivery signals, and means for generating amplitude signals indicative of the magnitude of the torque impulses imparted to the engine'"'"'s crankshaft by the burning of the fuel in the engine'"'"'s individual cylinders, a fuel distribution control for equalizing the magnitudes of the torque impulse produced by all of the cylinders characterized by:
- means for correcting the value of said amplitude signals in response to the rotational velocity and the rotational position of the engine'"'"'s crankshaft to generate corrected amplitude signals;
first means for averaging said corrected amplitude signals to generate an individual average amplitude signal for each engine cylinder;
means for integrating all of said individual average amplitude signals to generate individual difference signals indicative of the difference between said individual average amplitude signals and the average amplitude for all the cylinderssecond means for averaging all of said individual difference signals to generate an average difference signal;
first means for subtracting said average difference signal from each of said individual difference signals to generate a fuel correction signal for each cylinder; and
means for summing said fuel correction signals to said fuel delivery signals to generate a corrected fuel delivery signal tending to equalize the contribution of each cylinder to the total torque output of the engine.
1 Assignment
0 Petitions
Accused Products
Abstract
A fuel distribution control for the fuel control system of an internal combustion engine having a fuel control computer generating fuel delivery signals indicative of the engines fuel requirements, means for delivering fuel to the engine in response to said fuel delivery signals and means for generating amplitude signals indicative of the magnitudes of the torque impulses generated by the individual cylinders, the fuel distribution control comprising means for correcting the amplitude signals as a function of the cylinders position along the engine'"'"'s crankshaft and engine speed, means for generating an average amplitude signal for each cylinder, means for generating an individual difference signal for each cylinder indicative of the difference between the average amplitude signal for the individual cylinders and the average amplitude of all the cylinders, means for generating a fuel correction for each individual cylinder from said difference signals, and means for summing the fuel correction signal with the fuel delivery to generate a corrected fuel delivery signal operative to equalize the contribution of each cylinder to the total output torque of the engine.
20 Citations
22 Claims
-
1. In combination with an internal combustion engine fuel control system including a fuel control computer for generating fuel delivery signals in response to the operational parameters of the engine, means for delivering fuel to the engine in response to the fuel delivery signals, and means for generating amplitude signals indicative of the magnitude of the torque impulses imparted to the engine'"'"'s crankshaft by the burning of the fuel in the engine'"'"'s individual cylinders, a fuel distribution control for equalizing the magnitudes of the torque impulse produced by all of the cylinders characterized by:
-
means for correcting the value of said amplitude signals in response to the rotational velocity and the rotational position of the engine'"'"'s crankshaft to generate corrected amplitude signals; first means for averaging said corrected amplitude signals to generate an individual average amplitude signal for each engine cylinder; means for integrating all of said individual average amplitude signals to generate individual difference signals indicative of the difference between said individual average amplitude signals and the average amplitude for all the cylinders second means for averaging all of said individual difference signals to generate an average difference signal; first means for subtracting said average difference signal from each of said individual difference signals to generate a fuel correction signal for each cylinder; and means for summing said fuel correction signals to said fuel delivery signals to generate a corrected fuel delivery signal tending to equalize the contribution of each cylinder to the total torque output of the engine. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
-
-
14. A method for controlling the quantity of fuel supplied to each cylinder is an internal combustion engine having means for generating fuel delivery signals in response to at least one operational parameter of the engine, means for delivering fuel to the engine in response to the fuel delivery signals, and means for generating amplitude signals indicative of the magnitude of the impulses imparted to the engine'"'"'s crankshaft as a result of burning the fuel in the engine'"'"'s individual cylinders, said method comprising the steps of:
-
correcting the value of said amplitude signals in response to the rotational velocity and rotational position of the engine'"'"'s crankshaft to generate corrected amplitude signals for torque impulses produced by each cylinder on an individual basis; averaging said corrected amplitude signals to generate an average amplitude signal for each cylinder; averaging all of said average amplitude signals for each cylinder to generate an average amplitude signal for all of the cylinders; subtracting the average amplitude signal for all of the cylinders from the average amplitude signal for each cylinder in a predetermined sequence to generate difference signals for each cylinder; averaging said difference signals to generate an average difference signal; subtracting said average difference signal from said difference signals for each cylinder to generate a fuel correction signal; and summing said fuel correction signals with said fuel delivery signals to individually correct the quantity of fuel delivered to the engine'"'"'s cylinders tending to equalize the contribution of each cylinder to the total torque output of the engine cylinder. - View Dependent Claims (15, 16, 17, 18)
-
-
19. A fuel control system for an internal combustion engine having at least one fuel delivery device for delivering fuel to the engine in response to electrical fuel delivery signals comprising:
-
fuel control computer means for generating fuel delivery signals in response to at least one operational parameters of the engine; means for generating amplitude signals in response to the instantaneous rotational velocity of the engine'"'"'s crankshaft, said amplitude signals indicative of the magnitude of the torque impulses imparted to the engine'"'"'s crankshaft by the burning of fuel in the engine'"'"'s individual cylinders; means for correcting the value of said amplitude signals in response to the rotational position of the engine'"'"'s crankshaft and engine speed to generate corrected amplitude signals; means for averaging said corrected amplitude signals to generate an individual average amplitude signal for each engine cylinder; means for integrating said individual average amplitude signals to generate individual difference signals indicative of the difference between said individual average amplitude signals for each cylinder and an average amplitude signal for all of the cylinders; means for averaging said individual difference signals to generate an average difference signal; means for subtracting said average difference signal from the individual difference signals to generate a correction signal; and means for combining said correction signal with said fuel delivery signal to generate a corrected fuel delivery signal enabling said at least one fuel delivery device to deliver a quantity of fuel to each engine operative to equalize the torque contribution of each cylinder to the total torque output of the engine. - View Dependent Claims (20)
-
-
21. A method for equalizing the contribution of each cylinder in an internal combustion engine to total torque output of the engine comprising the steps of:
-
detecting at least one operational parameter of the engine to generate fuel delivery signals indicative of the engine'"'"'s fuel requirements; detecting a moving member of the engine indicative of the instantaneous rotational velocity of the engine'"'"'s crankshaft to generate amplitude signals indicative of the magnitude of the torque impulses imparted to the engine'"'"'s crankshaft by the burning of fuel in the individual cylinders; adding predetermined correction factors to said amplitude signals to generate corrected amplitude signals in response to detecting predetermined rotational positions of the engine'"'"'s crankshaft, said predetermined correction factors correcting said amplitude signals for the position of the cylinder which produced the torque impulse along the crankshaft and engine speed; averaging said corrected amplitude to generate an individual average amplitude signal for each cylinder; integrating said individual average amplitude signals to generate individual difference signals for each cylinder, said individual difference signals indicative of the difference between said individual average amplitude signals and an average amplitude signal for all of the cylinders; averaging said individual difference signals to generate an average difference signal; subtracting said average difference signal from said individual difference signals to generate a correction signal; and summing said correction signal with said fuel delivery signal to generated a corrected fuel delivery signal enabling said at least one fuel delivery device to deliver a quantity of fuel to each engine cylinder operative to equalize the contribution of each cylinder to the total torque output of the engine. - View Dependent Claims (22)
-
Specification