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Power source braking system to prevent engine stalls

A technology of engine braking and engine speed, applied in engine control, machine/engine, electrical control, etc., can solve problems such as engine stall

Active Publication Date: 2013-09-04
CATERPILLAR INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the system of the '891 patent may not be sufficient to prevent engine stall under all engine operating conditions

Method used

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  • Power source braking system to prevent engine stalls
  • Power source braking system to prevent engine stalls
  • Power source braking system to prevent engine stalls

Examples

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Embodiment Construction

[0016] figure 1 An exemplary machine 10 is shown. Machine 10 may be a mobile machine for some type of industry-related task, such as mining, construction, agriculture, transportation, or any other industry known in the art. For example, machine 10 may be an earth moving machine such as an off-road truck. Machine 10 may also be embodied as an on-highway truck, passenger car, or any other suitable machine for performing tasks. Machine 10 may include a power source 12 , a torque converter 14 and a transmission 16 operatively connected to a traction device 18 .

[0017] like figure 2 As shown, machine 10 may include one or more systems that facilitate power generation. In particular, machine 10 may include thermal management system 20 and lubrication system 30 . Fluid flow may be regulated by thermal management system 20 in order to regulate the temperature of machine 10 .

[0018] Power source 12 may be configured to generate a power output and may include an internal comb...

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PUM

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Abstract

A system to prevent engine stalls for a machine having a power source is disclosed. The power source is in communication with a controller, which is configured to determine the temperature of the power source and compare the temperature of the power source to a predetermined threshold temperature. The controller is configured to disable power source braking if the temperature of the power source is less than the threshold temperature. The controller is further configured to determine the power source speed and the travel speed of the machine, and disable power source braking if the power source speed and machine travel speed are less than predetermined thresholds.

Description

technical field [0001] The present invention relates generally to preventing engine stalls and, more particularly, to preventing engine stalls by disabling engine braking under certain conditions. Background technique [0002] Machines such as off-road trucks may include one or more power sources. Power sources may include engines, batteries, and any other suitable energy generation and energy storage devices. A machine may also include a powered device operable on power generated or supplied by a power source. When operating such machinery, it is useful to prevent stalling of the power source that operates the machinery. [0003] For example, during operation of the machine, multiple powered devices may require power from the power source. From time to time, the various power requirements may conflict because the power source may not be able to meet all of the power requirements. If the powered propulsion unit requires more power than is available from the power source,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02D41/04F02D35/02F02D41/02F02D45/00
CPCF02D2200/501F02D41/021F02D2400/12F02D41/123F02D2200/023
Inventor B·K·加尔曼S·M·威立G·D·布拉施特C·J·施奥布
Owner CATERPILLAR INC