Transient compensation of EGR and boost in an engine using accelerator pedal rate data
First Claim
1. An internal combustion engine comprising:
- a control system comprising a processor for processing various data to develop data for control of various aspects of engine operation, including controlling a device that controls flow of a gaseous fluid into the engine;
wherein a) the processor processes certain data according to a transient compensation strategy to develop a multiplier data value for transient compensation of a control data value for controlling the device by multiplying that control data value by that multiplier data value, b) the transient compensation strategy comprises a map containing data values for the multiplier, each of which is correlated with both a particular data value for engine speed within a particular range of data values for engine speed and a particular data value for accelerator pedal rate within a particular range of data values for accelerator pedal rate, and c) the processor selects one of the multiplier data values from the map on the basis of a data value for engine speed and of a data value for accelerator pedal rate and then multiplies the control data value for controlling the device by the one selected multiplier data value.
11 Assignments
0 Petitions
Accused Products
Abstract
An internal combustion engine (10) has a control system (24) for processing various data to develop data for control of various aspects of engine operation, including controlling a device, such as an EGR valve (22) or turbocharger (16). A transient compensation strategy develops a multiplier data value for transient compensation of a control data value for controlling the device by multiplying that control data value by that multiplier data value. The transient compensation strategy comprises a map (34, 40) containing data values for the multiplier, each of which is correlated with both a particular data value for engine speed within a range of data values for engine speed (N) and a particular data value for accelerator pedal rate (APS—d) within a range of data values for accelerator pedal rate. The strategy selects one of the multiplier data values from the map on the basis of a data value for engine speed and of a data value for accelerator pedal rate and then multiplies the control data value for controlling the device by the one selected multiplier data value.
21 Citations
24 Claims
-
1. An internal combustion engine comprising:
-
a control system comprising a processor for processing various data to develop data for control of various aspects of engine operation, including controlling a device that controls flow of a gaseous fluid into the engine; wherein a) the processor processes certain data according to a transient compensation strategy to develop a multiplier data value for transient compensation of a control data value for controlling the device by multiplying that control data value by that multiplier data value, b) the transient compensation strategy comprises a map containing data values for the multiplier, each of which is correlated with both a particular data value for engine speed within a particular range of data values for engine speed and a particular data value for accelerator pedal rate within a particular range of data values for accelerator pedal rate, and c) the processor selects one of the multiplier data values from the map on the basis of a data value for engine speed and of a data value for accelerator pedal rate and then multiplies the control data value for controlling the device by the one selected multiplier data value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A method for transient control of a device that controls flow of a gaseous fluid into an internal combustion engine, the method comprising:
processing various data to develop data for control of the device including a) processing certain data according to a transient compensation strategy to develop a multiplier data value for transient compensation of a control data value for controlling the device by multiplying that control data value by that multiplier data value, b) providing the transient compensation strategy with a map containing data values for the multiplier, each of which is correlated with both a particular data value for engine speed within a particular range of data values for engine speed and a particular data value for accelerator pedal rate within a particular range of data values for accelerator pedal rate, and c) selecting one of the multiplier data values from the map on the basis of a data value for engine speed and of a data value for accelerator pedal rate and then multiplying the control data value for controlling the device by the one selected multiplier data value. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
-
21. A control system for an internal combustion engine comprising:
-
a processor for processing various data to develop data for control of various aspects of engine operation, including control of a device that controls flow of a gaseous fluid into the engine; wherein a) the processor comprises a transient compensation strategy for developing a multiplier data value for transient compensation of a control data value for controlling the device by multiplying that control data value by that multiplier data value, b) the transient compensation strategy comprises a map containing data values for the multiplier, each of which is correlated with both a particular data value for engine speed within a particular range of data values for engine speed and a particular data value for accelerator pedal rate within a particular range of data values for accelerator pedal rate, and c) the processor is programmed to select one of the multiplier data values from the map on the basis of a data value for engine speed and of a data value for accelerator pedal rate and then to multiply the control data value for controlling the device by the one selected multiplier data value. - View Dependent Claims (22, 23, 24)
-
Specification