Dual Throttle Control Module for Engine Speed Management
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Solution Overview
Problem
Existing machine throttle systems require operators to frequently remove their hands from control interfaces to adjust engine speed, which is impractical and inefficient, especially when temporary adjustments are needed during operation.
Innovation Solution
A machine throttle system that includes a control module communicatively coupled to both a hand throttle device and a foot throttle device, allowing the engine to operate at different speeds based on inputs from both devices, with the foot throttle functioning as a deceleration pedal when the hand throttle is set above a predetermined high level, enabling temporary speed adjustments without hand removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a hand throttle is used to set the engine throttle level, then the engine can operate at a desired speed, but the operator must remove hands from interface systems to adjust the throttle
Solution Approach 1:
The foot-operated throttle device is integrated into the machine controls, allowing it to serve dual purposes: as a primary throttle control when the hand throttle is in idle position, and as a temporary override to reduce engine speed when the hand throttle is set to high position. This multi-functional design eliminates the need for separate controls and improves operator convenience while maintaining throttle stability.
Solution Approach 2:
The control module acts as an intermediary between the hand throttle, foot throttle, and engine controller. It receives signals from both throttle devices, determines the appropriate command based on their positions, and sends the corresponding throttle level command to the engine controller. This intermediary processing enables seamless integration of both throttle inputs without direct mechanical linkage complexity.
2Adaptability or versatility
If the foot throttle is used to adjust engine speed, then temporary speed changes are possible, but the system requires complex linkage mechanisms
Solution Approach 1:
The patent replaces complex mechanical linkage systems with an electronic control architecture. Instead of using mechanical levers, rods, and pivots to transmit throttle commands, the system uses electronic sensors to detect throttle positions and an electronic control module to process signals and control the engine. This substitution dramatically simplifies the physical structure while maintaining full functionality for temporary speed adjustments.
Solution Approach 2:
The throttle control system is segmented into independent functional components: hand throttle sensor, foot throttle sensor, control module with logic processing, and engine controller. Each component performs a specific function and communicates through electronic signals rather than mechanical connections. This segmentation allows the foot throttle to provide temporary speed adjustments without requiring a unified complex mechanical linkage system.
3Power
If the hand throttle is set to high throttle value, then the engine operates at high speed, but the operator cannot temporarily reduce speed without removing hands from controls
Solution Approach 1:
The system dynamically changes the function of the foot throttle based on the hand throttle position. When the hand throttle is in the idle position, the foot throttle commands engine acceleration. When the hand throttle is set to high position, the foot throttle commands engine deceleration. This dynamic functional switching allows the operator to temporarily reduce engine speed from high power settings without removing hands from the control interface, while maintaining full power capability when needed.
Solution Approach 2:
The control module continuously monitors the positions of both the hand throttle and foot throttle, and uses this feedback to determine the appropriate engine throttle command. When the foot throttle is depressed while the hand throttle is at high position, the system receives feedback about this input and responds by reducing engine speed. This feedback mechanism enables intuitive temporary deceleration while maintaining high power readiness.
Data Source
AI summary
A machine throttle system according to an embodiment of the present disclosure includes a power system configured to operate at different speeds. The power system is coupled to a first throttle device and a second throttle device. A control module is communicatively coupled to the power system, the first throttle device, and the second throttle device. The control module is configured to cause the power system to operate at a first speed in response to the first throttle device being set to a level. The control module is also configured to cause the power system to increase in speed in response to the second throttle device when the first throttle device level is set below a predetermined value. The control module is further configured to cause the power system to decrease in speed in response to the second throttle device when the first throttle device level is set at or above the predetermined value.