Automatic Steering Heating for Cold-Weather Grease Viscosity
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In low temperature environments, the increased viscosity of grease in the gear mechanism of automatic steering systems in work vehicles leads to higher motor torque, reducing operability and potentially disabling the automatic steering function, thereby decreasing convenience.
Innovation Solution
Incorporating a heat supply unit to maintain the grease at a suitable viscosity by supplying heat to the automatic steering mechanism, ensuring the automatic steering function remains operational and convenient in cold conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the automatic steering mechanism operates in low temperature environment, then the steering function is available, but the grease viscosity increases causing higher motor torque and reduced operability
Solution Approach 1:
The patent applies parameter changes by heating the grease in the gear case to change its physical state from high-viscosity (low temperature) to low-viscosity (elevated temperature). The heat generation unit raises the grease temperature above the dew point, fundamentally changing the lubrication properties and reducing motor torque requirements, thereby resolving the contradiction between function availability and ease of operation
Solution Approach 2:
The patent utilizes thermal expansion principles by applying heat to the grease, causing it to expand and reduce viscosity. The heat generation unit increases the temperature of the grease, which thermally expands and becomes less viscous, allowing the steering mechanism to operate smoothly in low temperature environments without excessive torque
2Reliability
If the grease viscosity increases in low temperature, then the motor torque increases to maintain steering function, but the operability and convenience are reduced
Solution Approach 1:
The patent changes the temperature parameter of the grease by introducing a heat generation unit. By maintaining the grease temperature above the dew point through active heating, the system prevents viscosity increase and the associated torque penalty, resolving the contradiction between maintaining steering function and reducing energy consumption
3Reliability
If the automatic steering function is disabled in low temperature to protect the motor, then the motor is protected from overload, but the convenience of the work vehicle is reduced
Solution Approach 1:
The patent applies preliminary action by heating the grease in the gear case before the automatic steering function is activated in low temperature environments. The heat generation unit pre-heats the grease above the dew point, ensuring proper lubrication conditions are established before motor operation, thereby allowing the steering function to remain available without risking motor overload
Solution Approach 2:
The patent changes the thermal parameter of the lubrication system by introducing active heating. This parameter change ensures the grease remains in an optimal viscosity state regardless of ambient temperature, allowing the automatic steering function to operate safely and conveniently in low temperature environments without disabling the feature for motor protection
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The heat supply unit effectively maintains the grease viscosity, enhancing the operability of the steering wheel and enabling the automatic steering function in low temperature environments, thus improving the overall convenience of the work vehicle.
Implementation Method 1
a heat supply unit so provided as to supply heat to the automatic steering mechanism
Data Source
AI summary
An exemplary work vehicle includes: a steering wheel; an automatic steering mechanism that enables an automatic steering of the steering wheel; and a heat supply unit so provided as to supply heat to the automatic steering mechanism.