Engine power monitoring system
First Claim
1. A system for monitoring engine performance of a work machine wherein the work machine includes an engine coupled to a torque converter, said system comprising:
- a first sensor for determining engine speed;
a second sensor for determining the throttle position of the engine;
a third sensor for determining the output speed of the torque converter;
an electronic controller coupled with said first, second and third sensors for receiving signals therefrom, said controller being operable to receive a signal from said first sensor indicative of the speed of the engine, a signal from said second sensor indicative of the throttle position of the engine, and a signal from said third sensor indicative of the output speed of the torque converter;
monitoring means for producing a signal indicative of low engine performance, said monitoring means being coupled to said electronic controller for receiving signals therefrom; and
memory means coupled to said controller and having stored therein a plurality of different engine speed and converter output speed correlations, each correlation representing the engine speed and converter output speed at a particular throttle position;
said controller outputting a signal to said monitoring means indicative of low engine power performance when said controller receives a signal from said first sensor indicative of the speed of the engine, a signal from said second sensor indicative of the throttle position of the engine, and a signal from said third sensor indicative of the converter output speed being less than a predetermined converter output speed, said predetermined converter output speed being determined from the engine speed and converter output speed correlation selected by said controller based upon signals received from said first and second sensors.
1 Assignment
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Accused Products
Abstract
A system for monitoring the output power of an engine associated with a work machine based upon monitoring the input and output speeds of a torque converter or torque divider coupled to the engine, the present system including a first sensor for determining engine speed, a second sensor for determining the throttle position of the engine, a third sensor for determining the output speed of the torque converter or torque divider, and an electronic controller coupled to the first, second and third sensors for receiving signals therefrom, the controller comparing the actual engine speed and the actual torque converter or divider output speed at a particular throttle setting to an engine speed and converter/divider output speed indicative of optimal or desired engine power output at that same throttle position and thereafter outputting a signal to a monitoring/warning system indicative of low engine power performance when the controller receives a signal from the third sensor indicative of the converter/divider output speed being less than a predetermined converter/divider output speed based upon optimal or desired engine performance at that particular throttle position.
32 Citations
18 Claims
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1. A system for monitoring engine performance of a work machine wherein the work machine includes an engine coupled to a torque converter, said system comprising:
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a first sensor for determining engine speed; a second sensor for determining the throttle position of the engine; a third sensor for determining the output speed of the torque converter; an electronic controller coupled with said first, second and third sensors for receiving signals therefrom, said controller being operable to receive a signal from said first sensor indicative of the speed of the engine, a signal from said second sensor indicative of the throttle position of the engine, and a signal from said third sensor indicative of the output speed of the torque converter; monitoring means for producing a signal indicative of low engine performance, said monitoring means being coupled to said electronic controller for receiving signals therefrom; and memory means coupled to said controller and having stored therein a plurality of different engine speed and converter output speed correlations, each correlation representing the engine speed and converter output speed at a particular throttle position; said controller outputting a signal to said monitoring means indicative of low engine power performance when said controller receives a signal from said first sensor indicative of the speed of the engine, a signal from said second sensor indicative of the throttle position of the engine, and a signal from said third sensor indicative of the converter output speed being less than a predetermined converter output speed, said predetermined converter output speed being determined from the engine speed and converter output speed correlation selected by said controller based upon signals received from said first and second sensors. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A system for monitoring engine performance of a work machine wherein the work machine includes an engine coupled to a torque converter, said system comprising:
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a first sensor for determining engine speed; a second sensor for determining the output speed of the torque converter; an electronic controller coupled with said first and second sensors for receiving signals therefrom, said controller being operable to receive a signal from said first sensor indicative of the speed of the engine, and a signal from said second sensor indicative of the output speed of the torque converter; monitoring means for producing a warning signal indicative of low engine power performance, said monitoring means being coupled to said electronic controller for receiving signals therefrom; memory means coupled to said controller and having stored therein an engine speed and converter output speed correlation representative of the engine performance at the full throttle position; said controller outputting a signal to said monitoring means when said controller receives a signal from said first sensor indicative of the speed of the engine, and a signal from said second sensor indicative of the converter output speed being less than a predetermined converter output speed, said predetermined converter output speed being determined from the engine speed and converter output speed correlation for operation of the engine at the full throttle position. - View Dependent Claims (13, 14, 15)
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16. A system for monitoring engine performance of a work machine wherein the work machine includes an engine coupled to a torque divider, said system comprising:
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a first sensor for determining engine speed; a second sensor for determining the throttle position of the engine; a third sensor for determining the output speed of the torque divider; an electronic controller coupled with said first, second and third sensors for receiving signals therefrom, said controller being operable to receive a signal from said first sensor indicative of the speed of the engine, a signal from said second sensor indicative of the throttle position of the engine, and a signal from said third sensor indicative of the output speed of the torque divider; monitoring means for producing a signal indicative of low engine performance, said monitoring means being coupled to said electronic controller for receiving signals therefrom; and memory means coupled to said controller and having stored therein a plurality of different engine speed and torque divider output speed correlations, each correlation representing the engine speed and torque divider output speed at a particular throttle position; said controller outputting a signal to said monitoring means indicative of low engine power performance when said controller receives a signal from said first sensor indicative of the speed of the engine, a signal from said second sensor indicative of the throttle position of the engine, and a signal from said third sensor indicative of the torque divider output speed being less than a predetermined torque divider output speed, said predetermined torque divider output speed being determined from the engine speed and torque divider output speed correlation selected by said controller based upon signals received from said first and second sensors. - View Dependent Claims (17, 18)
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Specification