Method for controlling a fuel metering system of an internal combustion engine

Claim 1

A method for controlling a fuel metering system of an internal combustion engine, comprising a sequence of calculation steps for calculating a quantity of fuel to be delivered to power cylinders of said engine in response to engine operating conditions determined in accordance with a plurality of parameters, including a first step for calculating a first value indicative of an increment of fuel supply responsive to one of said operating conditions, a second step for calculating a second value indicative of an increment of fuel supply responsive to another one of said operating conditions, and a step for comparing said first and second values and selecting the larger one of said first and second values for said calculation of the quantity of fuel.

Claim 2

A method for controlling a fuel metering system of an internal combustion engine, comprising a sequence of calculation steps for calculating a quantity of fuel to be delivered to power cylinders of said engine in response to engine operating conditions determined in accordance with a plurality of parameters, including a first step for calculating a first value indicative of an increment of fuel supply responsive to one of said operating conditions, a second step for calculating a second value indicative of an increment of fuel supply responsive to another one of said operating conditions, and a step for comparing said first and second values and selecting the larger one of said first and second values for said calculation of the quantity of fuel.

Claim 6

A method for controlling a fuel metering system of an internal combustion engine including a fuel delivering device, comprising steps of: a fundamental value calculating step for calculating a fundamental value for determining a fundamental quantity of fuel supply in accordance with a first parameter indicative of an engine speed and a second parameter indicative of an amount of air drawn into the engine; a first increment coefficient calculating step for calculating a first increment coefficient in response to a parameter indicative of an engine temperature; a second increment coefficient calculating step for calculating a second increment coefficient in response to a parameter indicative of an engine load; a comparison for comparing said first and second increment coefficients and for selecting the larger one of said first and second increment coefficients; a control signal generating step for calculating a fuel supply control signal on the basis of a value obtained by multiplying said fundamental value with said selected increment coefficient; and a control step for controlling an operation of said fuel delivering device in accordance with said fuel supply control signal.

Claim 7

A method for controlling a fuel metering system of an internal combustion engine including a fuel delivering device, comprising steps of: a fundamental value calculating step for calculating a fundamental value for determining a fundamental quantity of fuel supply in accordance with a first parameter indicative of an engine speed and a second parameter indicative of an amount of air drawn into the engine; a first increment coefficient calculating step for calculating a first increment coefficient in response to a parameter indicative of an engine temperature; a second increment coefficient calculating step for calculating a second increment coefficient in response to a parameter indicative of an engine load; a comparison for comparing said first and second increment coefficients and for selecting the larger one of said first and second increment coefficients; a control signal generating step for calculating a fuel supply control signal on the basis of a value obtained by multiplying said fundamental value with said selected increment coefficient; and a control step for controlling an operation of said fuel delivering device in accordance with said fuel supply control signal.