Method and apparatus for responding to failure of a load
AssigneeKold Ban International, Ltd.
InventorsJames O. Burke, II, Dean R. Solberg
Life of this patent
Estimating the term…
Abstract
An apparatus for responding to failure of a secondary load driven by a primary mover includes at least one sensor sensing a rotational parameter of the secondary load and an electronic control module for (1) disengaging the secondary load from the primary mover and subsequently re-engaging it when the sensed rotational parameter indicates a first range of slip, (2) disengaging the secondary load from the primary mover when the sensed rotational parameter indicates a second range of slip, and (3) deactivating the primary mover when said sensed rotational parameter indicates a third range of slip.
Claims46
An apparatus for controlling engagement of a secondary load to a primary mover comprising:
- a first sensor adapted to sense rotation of a primary mover said first sensor providing a first sensor output representative of a rotational parameter of said primary mover;
- a second sensor adapted to sense rotation of a secondary load, said second sensor providing a second sensor output representative of rotational parameter of said secondary load;
- and
- an electronic control module coupled to said first and second sensor outputs and further adapted to be coupled to said primary mover and said secondary load;
- wherein said electronic control module comprises logic responsive to said first and second sensors and operative to generate a first signal to control engagement of said secondary load to said primary mover and a second signal to control the operation of said primary mover.
A method for controlling a driving force applied by an engine to a power take-off driven accessory comprising the steps of:
- (a) sensing rotational parameters of at least one of said engine and said accessory;
- (b) calculating a slip parameter from said sensed rotational parameters;
- (c) applying a disengagement signal to said accessory when said slip parameter is within a first range of slip;
- and
- (d) applying a deactivation signal to said engine when said slip parameter is within a second range of slip.
An electronic control module for use in a system for monitoring an engine power take-off driven accessory, said system comprising at least one sensor responsive to rotational parameters of an engine and an accessory, said engine comprising an engine activation control operative to deactivate said engine, said accessory comprising an accessory engagement control operative to disengage said accessory from said engine, said module comprising:
- at least one input coupled to said at least one sensor;
- a first output coupled to said accessory engagement control;
- a second output coupled to said engine activation control;
- and
- means for comparing said rotational parameters to a plurality of pre-set thresholds;
- means for disengaging said accessory based on said comparison;
- and
- means for deactivating said engine based on said comparison.
A method for protecting an engine power take-off driven accessory comprising the steps of:
- (a) sensing pulley rotational parameters of at least one of said engine and said accessory;
- (b) calculating a slip parameter from said sensed pulley rotational parameters;
- (c) providing first, second and third slip ranges, where said second slip range represents more severe slip than said first slip range and said third slip range represents more severe slip than said second slip range;
- (d) activating a warning indicator when said slip parameter is within at least one of said first, second and third slip ranges;
- (e) disengaging said accessory from said engine for a pre-determined time delay when said slip parameter is within said first slip range and then subsequently re-engaging said accessory;
- (f) disengaging said accessory from said engine when said slip parameter is within said second slip range;
- and
- (g) deactivating said engine when said slip parameter is within said third slip range.
An apparatus for controlling engagement of a secondary load to a primary mover comprising:
- at least one sensor adapted to sense rotation of said secondary load and said primary mover, said at least one sensor providing a sensor output representative of rotational speed of said secondary load and said primary mover;
- an electronic control module coupled to said sensor output and further coupled to said primary mover and said secondary load;
- wherein said electronic control module comprises logic responsive to said at least one sensor and operative to generate a first signal to control engagement of said secondary load to said primary mover and a second signal to control operation of said primary mover.
A system for detecting failure of an engine power take-off driven accessory comprising:
- at least one sensor to sense a rotational parameter of an engine and an accessory;
- an electronic control module responsive to said at least one sensor and comprising:
- means for generating a first signal to disengage said accessory from said engine based on a comparison of said rotational speeds with a first threshold;
- means for generating a second signal to deactivate said engine based on a comparison of said rotational speeds with a second threshold.
A method for controlling a driving force applied by an engine to a power take-off driven accessory comprising the steps of:
- (a) sensing rotational parameters of at least one of said engine and said accessory;
- (b) applying a disengagement signal to said accessory when said sensed rotational parameters are within a first range of slip;
- and
- (c) terminating said disengagement signal to said accessory after a pre-determined time delay;
- (d) repeating steps (b) and (c) for a pre-determined number of repetitions;
- (e) applying said disengagement signal to said accessory when said sensed rotational parameters are within said first range of slip.
- (f) applying said disengagement signal to said accessory when said sensed rotational parameters are within a second range of slip.
A system for detecting failure of an engine power take-off driven accessory comprising:
- first and second sensors to sense a rotational parameter of an engine and an accessory;
- an electronic control module responsive to said first and second sensors and comprising:
- means for generating a signal to disengage said accessory from said engine based on a comparison of said rotational parameters with a first threshold;
- means for terminating and subsequently re-generating said signal to disengage said accessory from said engine to correct failure of said accessory.
An electronic control module for use in a system for monitoring an engine power take-off driven accessory, said system comprising at least one sensor responsive to rotational parameters of said engine and said accessory, said accessory comprising an accessory engagement control operative to disengage said accessory from said engine, said module comprising:
- at least one input coupled to said at least one sensor;
- a first output coupled to said accessory engagement control;
- means for comparing said rotational parameters to a plurality of pre-set thresholds to detect a failure condition of said accessory;
- means for disengaging said accessory based on said comparison;
- means for retrying engaging said accessory to correct said failure condition;
- and
- means for disengaging said accessory when said failure condition persists.
An apparatus for controlling engagement of a secondary load to a primary mover, said primary mover operable to propel a vehicle, said apparatus comprising:
- a first sensor adapted to sense rotation of said primary mover, said first sensor providing a first sensor output representative of a rotational parameter of said primary mover;
- a second sensor adapted to sense rotation of a secondary load, said second sensor providing a second sensor output representative of a rotational parameter of said secondary load;
- and
- an electronic control module coupled to said first and second sensor outputs and further adapted to be coupled to said primary mover and said secondary load;
- wherein said electronic control module comprises logic responsive to said first and second sensors and operative to generate a first signal to control engagement of said secondary load to said primary mover while maintaining operation of said primary mover and a second signal to control the operation of said primary mover.
Dependencies are inferred from the claim text.