US 5,537,322 A · System and method for determining a gradient speed of a shaft driven by an internal combustion engine

Abstract

In a system and a method for determining the speed gradient dn/dt of a shaft of an internal combustion engine, the speed gradient dn/dt is determined as a function of the third power of the speed and the difference between two segment times in the control device. The speed gradient is only determined in phases which are not time-critical, while segment times are read in or stored only in time-critical phases so that the data required for controlling and regulating the internal combustion engine can be calculated in these time-critical phases independently from the determination of the speed gradient.

Claims12

Dependent claims

A device for determining a speed gradient of a shaft driven by an internal combustion engine, comprising a transmitter for generating a speed-dependent pulse train associated with the shaft;

and a computing device determining time intervals between at least one of selectable pulses and identical pulse edges, said computing devices being formed so as to continuously determine parameters for regulating an internal combustion engine in a time-critical program as a function of these times, said transmitter and said computing device being formed so that a speed gradient is calculated in phases when no calculations for controlling or regulating the internal combustion engine are carried out so that said phases are not time-critical.

Dependencies are inferred from the claim text.

System and method for determining a gradient speed of a shaft driven by an internal combustion engine

Life of this patent

System and method for determining a gradient speed of a shaft driven by an internal combustion engine

Life of this patent

Abstract

Claims12