Vehicle Coolant Cooling via Transmission Gear Adjustment
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Solution Overview
Problem
Existing vehicle cooling systems face limitations in efficiently cooling the coolant when it exceeds a predetermined temperature, particularly in high-load driving conditions, which can lead to thermal deformation and reduced durability of the engine.
Innovation Solution
A method and system that rapidly cool the coolant by adjusting the number of gear stages in the transmission to increase engine speed, thereby driving the cooling fan more quickly through the crank damper pulley, and adjusting the air intake amount by changing the pitch angle of the air intake blade based on vehicle speed and outside temperature.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the cooling fan rotation speed is increased to cool the coolant more effectively, then the cooling efficiency is improved, but the power loss increases and the fan diameter must be reduced
Solution Approach 1:
The patent applies dynamics by making the cooling fan's rotation speed variable rather than fixed. The control unit adjusts the fan rotation speed dynamically based on coolant temperature, engine operating conditions, and air flow requirements. This allows the system to achieve effective cooling when needed while minimizing power loss during normal operation, resolving the contradiction between cooling efficiency and energy consumption.
Solution Approach 2:
The patent changes the operational parameters of the cooling fan system by introducing variable rotation speed control and adjustable fan diameter (through extendable blades). By modifying these parameters dynamically based on thermal conditions, the system optimizes the balance between cooling performance and power consumption, addressing the technical contradiction.
2Temperature
If the fan diameter is increased to maintain air flow, then the cooling efficiency is improved, but the rotational speed must be reduced which increases power loss
Solution Approach 1:
The patent makes both the fan rotation speed and fan diameter (via extendable blades) dynamic variables. The control unit adjusts these parameters in real-time based on cooling demands, allowing the system to maintain optimal air flow with minimal power consumption. This dynamic adjustment resolves the contradiction by enabling large diameter for cooling efficiency while reducing rotational speed only when necessary.
Solution Approach 2:
The cooling fan system is designed to perform multiple functions: it can operate at different rotation speeds and with different effective diameters (through extendable blades) to adapt to various operating conditions. This multi-functionality allows the single fan system to replace what would traditionally require multiple fans of different sizes, optimizing both cooling efficiency and power consumption across different scenarios.
3Temperature
If active cooling control is implemented to improve cooling efficiency, then the coolant temperature control is improved, but the device complexity increases
Solution Approach 1:
The patent implements feedback control by using sensors to monitor coolant temperature, engine operating conditions, and air flow, then using this information to dynamically adjust fan rotation speed and blade extension. The control unit continuously receives feedback and modifies fan operation accordingly, achieving precise temperature control while keeping the control logic integrated and manageable rather than overly complex.
Solution Approach 2:
The cooling system is designed to self-regulate based on detected conditions. The control unit automatically adjusts fan operation without requiring external intervention or complex manual control systems. The system serves itself by monitoring its own state and making appropriate adjustments, simplifying the overall control architecture while maintaining effective cooling.
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
This approach maximizes cooling efficiency, mitigates engine damage from high temperatures, and prevents failures like thermal deformation, ensuring effective engine operation and longevity.
Implementation Method 1
a cooling fan 4 is formed on one side of the radiator 3 to force the air to be blown into the radiator so that the coolant passing through the radiator 3 may be cooled
Implementation Method 2
changing a number of gear stages by adjusting the number of gear stages of a transmission to be reduced to a specific number of gear stages, so that the cooling fan is driven by driving the fan belt through a crank damper pulley using the increased engine speed
Implementation Method 3
adjusting the air intake amount by changing the pitch angle of the air intake blade based on vehicle speed and outside temperature
Data Source
AI summary
A method of rapidly cooling a high temperature vehicle coolant is disclosed. The method includes determining a coolant temperature lowering entry condition by detecting information on the coolant temperature, an engine speed, and a gear state and determining whether the coolant temperature needs to be rapidly lowered on the basis of the detected information; and changing a number of gear stages by adjusting the number of gear stages of a transmission to be reduced to a specific number of gear stages when the coolant temperature needs to be rapidly lowered in the determining of the coolant temperature lowering entry condition, so that the cooling fan is driven by driving the fan belt through a crank damper pulley using the increased engine speed according to the reducing adjustment of the number of gear stages.