Vehicle Cooling System with Electronic Valves for Fast Engine Warm-up
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Solution Overview
Problem
Internal combustion engines take longer to reach optimum running temperature due to reduced waste heat production, affecting fuel economy and engine wear, necessitating a cooling system that accelerates this process.
Innovation Solution
A cooling system with a pump, outflow conduit, and a return circuit with three branches, including a radiator, thermostat, heater matrix, and electronically controlled valves, which monitors engine and ambient conditions to optimize coolant flow and temperature regulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the engine is designed to be more fuel efficient, then fuel economy improves, but the time to reach optimum running temperature increases
Solution Approach 1:
The cooling system dynamically adjusts coolant flow through electronically controlled valves that can open or close based on engine temperature and operating conditions. This allows the system to optimize the balance between fuel efficiency and warm-up time by controlling when coolant is circulated to the radiator.
Solution Approach 2:
The system changes the operational parameters of the cooling circuit by using electronically controlled valves to adjust coolant flow rates and distribution. The control unit monitors engine temperature and adjusts valve positions to optimize the thermal management parameters, allowing faster warm-up while maintaining fuel efficiency.
2Measurement precision
If a complex cooling system with multiple valves and sensors is implemented, then temperature control precision improves, but device complexity increases
Solution Approach 1:
The cooling system uses multi-functional components where the electronically controlled valves serve multiple purposes: regulating coolant flow to the radiator, controlling flow to the heater matrix, and managing overall coolant circulation. The control unit integrates multiple sensor inputs to perform comprehensive temperature management, reducing the need for separate dedicated components.
Solution Approach 2:
The system implements closed-loop feedback control where sensors continuously monitor engine temperature, ambient temperature, and operating conditions. The control unit processes this feedback information and adjusts the valve positions in real-time to maintain precise temperature control, improving accuracy without requiring overly complex mechanical systems.
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 system reduces the time for a cold engine to reach optimal temperature, enhancing fuel economy and preventing engine damage by ensuring efficient coolant circulation and valve control.
Implementation Method 1
a second branch including a radiator and thermostat
Implementation Method 2
a second branch including a radiator and thermostat
Implementation Method 3
a third branch including a heater matrix
Implementation Method 4
a second branch including a radiator and thermostat
Data Source
AI summary
A method for controlling a cooling system for a vehicle having an internal combustion engine permits rapid warm-up of the engine by the use of two electrically-operated valves in addition to a conventional thermostat. The method includes controlling a bypass valve and a heater valve to both remain closed at low coolant temperatures and engine speed to inhibit coolant flow through the engine. A control unit opens the bypass valve to prevent cavitation in the water pump if engine speed and/or load exceeds a certain value. The heater valve is opened when a threshold engine coolant temperature is reached permitting warming of the heater matrix.