System and method for equalizing fuel-injection quantities among cylinders of an internal combustion engine
First Claim
Patent Images
1. A system for equalizing fuel-injection quantities among cylinders of an internal combustion engine of a vehicle, comprising:
- a fuel metering device for injecting a quantity of fuel into each cylinder of the engine;
a controller coupled to the fuel metering device;
the controller determining an angular acceleration of at least one of a crankshaft and camshaft of the vehicle during a combustion process at each cylinder;
the controller comparing the determined angular accelerations to detect a deviation between at least two determined angular accelerations; and
the controller controlling the fuel metering device to alter the quantity of fuel injected into one or more of the cylinders of the engine in order to compensate for a deviation, if such a deviation is detected.
1 Assignment
0 Petitions
Accused Products
Abstract
In a system and method for equalizing fuel-injection quantities among cylinders of an internal combustion engine, angular acceleration is measured during the combustion process of each cylinder of the internal combustion engine. The individual measured values of the angular acceleration are compared to one another. In case of deviations between the individual measured values, the fuel-injection quantity is altered in a way that allows for the deviations to be compensated.
-
Citations
20 Claims
-
1. A system for equalizing fuel-injection quantities among cylinders of an internal combustion engine of a vehicle, comprising:
-
a fuel metering device for injecting a quantity of fuel into each cylinder of the engine; a controller coupled to the fuel metering device; the controller determining an angular acceleration of at least one of a crankshaft and camshaft of the vehicle during a combustion process at each cylinder; the controller comparing the determined angular accelerations to detect a deviation between at least two determined angular accelerations; and the controller controlling the fuel metering device to alter the quantity of fuel injected into one or more of the cylinders of the engine in order to compensate for a deviation, if such a deviation is detected. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A method of equalizing fuel-injection quantities among cylinders of an internal combustion engine of a vehicle, comprising the steps of:
-
determining an angular acceleration of at least one of a crankshaft and camshaft of the vehicle during a combustion process at each cylinder; comparing the determined angular accelerations to detect a deviation between at least two determined angular accelerations; and controlling a fuel metering device to alter the quantity of fuel injected by the fuel metering device into one or more of the cylinders of the engine in order to compensate for a deviation, if such a deviation is detected. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
-
Specification