Engine Cooling Fluid Flow Control Device
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Solution Overview
Problem
Current temperature control systems in internal combustion piston engines are inadequate for precise and rapid temperature regulation, especially in large engines where mechanical thermostatic valves lead to delayed response times and significant temperature fluctuations due to long distances between the engine and central coolers.
Innovation Solution
A fluid flow control device with multiple parallel valve units, each with two operational positions and different flow characteristics, is integrated into the cooling system of the engine, allowing for precise control through a control system connected to temperature probes at various engine locations, enabling proactive and accurate temperature management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If mechanical thermostatic valves are used for temperature control, then the system is simple and reliable, but the response time is delayed and temperature fluctuations are significant
Solution Approach 1:
The patent replaces mechanical thermostatic valves with an electronically controlled fluid flow control device that receives control signals from a control system based on temperature sensor feedback. This substitution eliminates the inherent delay of mechanical thermostatic valves while maintaining system reliability through electronic control and monitoring.
Solution Approach 2:
The patent implements a feedback control system where temperature sensors continuously monitor engine temperature and send signals to the control system, which then adjusts the fluid flow control device accordingly. This closed-loop feedback mechanism enables rapid response to temperature changes while maintaining stable temperature control.
2Device complexity
If mechanical thermostatic valves are used for temperature control, then the system structure is simple, but temperature control precision is insufficient
Solution Approach 1:
The patent replaces mechanical thermostatic valves with an electronically controlled fluid flow control device that receives control signals from a control system based on temperature sensor feedback. This substitution eliminates the inherent delay of mechanical thermostatic valves while maintaining system reliability through electronic control and monitoring.
Solution Approach 2:
The patent changes the control parameter from mechanical valve opening degree to electronically controlled fluid flow rate, allowing for more precise adjustment of cooling fluid flow. The control system can modulate the fluid flow rate in response to temperature sensor feedback, achieving superior temperature control precision compared to binary open/closed mechanical valves.
3Volume of moving object
If long fluid paths are used in large engines, then the engine size is accommodated, but temperature control accuracy deteriorates due to flow losses and erosion
Solution Approach 1:
The patent implements a feedback control system where temperature sensors continuously monitor engine temperature and send signals to the control system, which then adjusts the fluid flow control device accordingly. This closed-loop feedback mechanism enables rapid response to temperature changes while maintaining stable temperature control.
Solution Approach 2:
The patent transitions from static mechanical valve control to dynamic electronic control of fluid flow rate. The fluid flow control device can dynamically adjust the cooling fluid flow rate in response to real-time temperature sensor feedback, accommodating long fluid paths in large engines while maintaining temperature control accuracy through active compensation of flow losses.
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 solution provides improved temperature control performance by allowing for precise and rapid adjustments in fluid flow rates, reducing temperature fluctuations and enhancing the overall engine operation, particularly in large engines with long fluid paths.
Implementation Method 1
a cooler system for cooling the cooling fluid
Implementation Method 2
a main cooling fluid channel having a pump system which main cooling fluid channel is arranged to run though at least a part of the engine from which heat is extracted
Data Source
Figure 1
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AI summary
Invention relates to an arrangement for an internal combustion piston engine having a cooling system for conveying heat from the internal combustion piston engine and maintaining temperature of the engine and/or its parts at a predetermined range, the cooling system comprising a main cooling fluid channel (12) having a pump system (14) which main cooling fluid channel is arranged to run though at least a part of the engine from which heat is extracted, and a branch channel (18) which branches from the main cooling fluid channel (12) in which branch channel there is a cooler system (20) for cooling the cooling fluid, and into which cooling system a fluid flow control device (22) is arranged at a the location where the branch channel branches from the main cooling fluid channel. The fluid flow control device (22) comprises at least two parallel valve units each having two operational positions.