Machine Speed Limit Control
First Claim
1. A method of controlling an engine forming part of a machine, in order to effect a predetermined machine speed limit, the method comprising:
- determining one or more control parameters for the engine on the basis of a theoretical engine speed limit that is based on the predetermined machine speed limit and variable machine parameters;
wherein the step of determining one or more control parameters comprises one or more of;
varying a control software engine speed limit from a first engine speed value to a desired engine speed limit value, the desired engine speed limit value being based on the theoretical engine speed limit;
setting the control software engine speed limit at a locked engine speed limit value, the locked engine speed limit value remaining constant when the theoretical engine speed limit is within a set range;
setting an engine governor gain based on the theoretical engine speed limit;
setting control software engine speed filter parameters based on the theoretical engine speed limit; and
determining control commands to prevent the machine transmission from changing gears on the basis of the engine speed limit with a hysteresis applied.
1 Assignment
0 Petitions
Accused Products
Abstract
An engine forming part of a machine is controlled in order to effect a predetermined machine speed limit. One or more engine control parameters are determined based on a theoretical engine speed limit that is based on the predetermined machine speed limit and variable machine parameters. This comprises on or more of: varying a control software engine speed limit from a first engine speed value to a desired engine speed limit value that is based on the theoretical limit; setting the control software engine speed limit at a locked engine speed limit value that remains constant when the theoretical limit is within a set range; setting an engine governor gain based on the theoretical limit; setting control software engine speed filter parameters based on the theoretical limit; and determining control commands to prevent the machine transmission from changing gears based on the engine speed limit with a hysteresis applied.
12 Citations
21 Claims
-
1. A method of controlling an engine forming part of a machine, in order to effect a predetermined machine speed limit, the method comprising:
-
determining one or more control parameters for the engine on the basis of a theoretical engine speed limit that is based on the predetermined machine speed limit and variable machine parameters; wherein the step of determining one or more control parameters comprises one or more of;
varying a control software engine speed limit from a first engine speed value to a desired engine speed limit value, the desired engine speed limit value being based on the theoretical engine speed limit;
setting the control software engine speed limit at a locked engine speed limit value, the locked engine speed limit value remaining constant when the theoretical engine speed limit is within a set range;
setting an engine governor gain based on the theoretical engine speed limit;
setting control software engine speed filter parameters based on the theoretical engine speed limit; and
determining control commands to prevent the machine transmission from changing gears on the basis of the engine speed limit with a hysteresis applied. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
-
-
20. An engine controller for effecting a predetermined machine speed limit in an engine that forms part of a machine, the engine controller comprising:
-
a processor, configured to determine one or more control parameters for the engine on the basis of a theoretical engine speed limit that is based on a predetermined machine speed limit and variable machine parameters; wherein the processor is configured to determine one or more control parameters by one or more of;
varying a control software engine speed limit from a first engine speed value to a desired engine speed limit value, the desired engine speed limit value being based on the theoretical engine speed limit;
setting the control software engine speed limit at a locked engine speed limit value, the locked engine speed limit value remaining constant when the theoretical engine speed limit is within a set range;
setting an engine governor gain based on the theoretical engine speed limit;
setting control software engine speed filter parameters based on the theoretical engine speed limit; and
determining control commands to prevent the machine transmission from changing gears on the basis of the engine speed limit with a hysteresis applied. - View Dependent Claims (21)
-
Specification