System and method for determining a gradient speed of a shaft driven by an internal combustion engine
First Claim
1. 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.
1 Assignment
0 Petitions
Accused Products
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.
49 Citations
12 Claims
-
1. 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.
- View Dependent Claims (2, 3, 4, 5, 6)
-
7. A method of determining a speed gradient of a shaft driven by an internal combustion engine, comprising the steps of generating a speed-dependent pulse train associated with the shaft by a transmitter;
- determining by a computing device time intervals between selectable pulses or between identical pulse edges;
continuously determining by the computing device parameters for regulating the internal combustion engine in a time critical program as a function of these times; and
determining a speed gradient in phases which are not time critical. - View Dependent Claims (8, 9, 10, 11, 12)
- determining by a computing device time intervals between selectable pulses or between identical pulse edges;
Specification