System and method for controlling an engine during a bog condition
First Claim
1. A method for controlling operation of an engine during a bog condition, the method comprising the steps of:
- monitoring values of a commanded engine RPM signal;
monitoring values of an actual engine RPM signal;
determining whether the difference between respective values of the commanded engine RPM signal and the actual engine RPM signal exceeds a predetermined threshold RPM value;
continuing to monitor values of the actual engine RPM signal to determine an inflection RPM point; and
controllably varying the commanded engine RPM signal from a predetermined point about the inflection RPM point towards a desired commanded speed value.
2 Assignments
0 Petitions
Accused Products
Abstract
A system and method for controlling operation of an engine during a bog condition is provided. The method allows for monitoring values of a commanded engine RPM signal and of an actual engine RPM signal. The method further allows for determining whether the difference between respective values of the commanded engine RPM signal and the actual engine RPM signal exceeds a predetermined threshold RPM value. An inflection determining step allows for continuing to monitor values of the actual engine RPM signal to determine an inflection RPM point. A varying step allows for controllably varying the commanded engine RPM signal from a predetermined point about the inflection RPM point towards a desired commanded speed value.
-
Citations
26 Claims
-
1. A method for controlling operation of an engine during a bog condition, the method comprising the steps of:
-
monitoring values of a commanded engine RPM signal;
monitoring values of an actual engine RPM signal;
determining whether the difference between respective values of the commanded engine RPM signal and the actual engine RPM signal exceeds a predetermined threshold RPM value;
continuing to monitor values of the actual engine RPM signal to determine an inflection RPM point; and
controllably varying the commanded engine RPM signal from a predetermined point about the inflection RPM point towards a desired commanded speed value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. A control system for controlling operation of an engine during a bog condition, the system comprising:
-
means for monitoring values of a commanded engine RPM signal;
means for monitoring values of an actual engine RPM signal;
means for determining whether the difference between respective values of the commanded engine RPM signal and the actual engine RPM signal exceeds a predetermined threshold RPM value;
means for determining an inflection RPM point in the actual engine RPM signal; and
means for controllably varying the commanded engine RPM signal from a predetermined point about the inflection RPM point towards a desired commanded speed. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17)
-
-
18. A control system for controlling operation of an engine during a bog condition, the system comprising:
-
a sensor coupled to sense values of a commanded engine RPM signal;
a sensor coupled to sense values of an actual engine RPM signal;
a subtractor coupled to receive the respective sensed values of the actual and the commanded engine RPM signals to generate an output signal indicative of the difference between the commanded engine RPM signal the actual engine RPM signal;
a comparator coupled to receive the output signal from the subtractor and a predetermined threshold RPM value to determine whether the value of the output signal from the subtractor exceeds the predetermined threshold RPM value;
a module coupled to receive the respective values of the actual engine RPM signal to determine a minimum RPM point reached during the bog condition; and
a control module configured to controllably vary the commanded engine RPM from a predetermined point about the minimum RPM point towards a desired commanded speed. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26)
-
Specification