Selective Heated Liquid Routing for Ice-Free Air Intake Ducts
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Solution Overview
Problem
Snow and ice accumulation in vehicle air intakes can block airflow, reducing engine performance in cold weather.
Innovation Solution
A system that selectively heats the air intake duct using heated liquid from the vehicle's cooling circuit, controlled by a temperature sensor and valve to prevent ice formation and melt snow, utilizing existing heat sources to improve intake efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If heated liquid is continuously supplied to the air intake duct, then ice and snow accumulation is prevented, but energy consumption increases and engine performance is reduced due to unnecessary heating
Solution Approach 1:
The system dynamically adjusts the heating operation based on real-time temperature conditions. The controller activates the electrically actuated valve only when the temperature indicator detects temperatures below the threshold, transforming the heating system from a static continuous operation to a dynamic conditional operation that adapts to environmental changes
Solution Approach 2:
The system implements a feedback control mechanism where the temperature indicator continuously monitors the air intake duct temperature and provides feedback to the controller. The controller processes this feedback and adjusts the valve operation accordingly, creating a closed-loop control system that prevents ice accumulation only when temperature conditions require it
2Productivity
If heated liquid is supplied to the air intake duct, then snow and ice are melted improving airflow, but the system complexity increases due to additional components
Solution Approach 1:
The system leverages the vehicle's existing cooling circuit liquid as a heat source, allowing the liquid to serve dual purposes: engine cooling during normal operation and ice/snow prevention in the air intake during cold conditions. This multi-functionality approach reuses existing infrastructure rather than requiring a dedicated heating system
Solution Approach 2:
The system uses the vehicle's own cooling circuit liquid, which already contains thermal energy from engine operation, to heat the air intake duct. The waste heat from the engine cooling process is self-utilized for ice prevention, eliminating the need for external heating sources or additional energy input
3Use of energy by moving object
If a valve is added to control liquid flow selectively, then energy is saved by avoiding unnecessary heating, but the device complexity increases
Solution Approach 1:
The system replaces complex mechanical flow control mechanisms with an electrically actuated valve that can be precisely controlled by the controller based on temperature feedback. This substitution of electrical control for mechanical control simplifies the overall system architecture while maintaining selective heating capability
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
Enhances airflow by preventing ice and snow accumulation, maintaining optimal engine performance by selectively heating the intake duct only when needed.
Implementation Method 1
the liquid is routed through a passage arranged in heat transfer relationship with the intake duct
Implementation Method 2
The temperature indicator provides an indication of a temperature in the air intake assembly upstream of the filter
Data Source
AI summary
A vehicle system includes an air intake assembly that has an inlet through which air flows, a filter downstream of the inlet, and an outlet downstream of the filter through which air from the filter flows, a liquid source, a valve, a temperature indicator and a controller. The valve is electrically actuated and arranged to selectively permit liquid flow from the liquid source to the air intake assembly. The temperature indicator provides an indication of a temperature in the air intake assembly upstream of the filter. And the controller is communicated with the temperature indicator and the valve and is operable to open the valve when the output of the temperature indicator indicates a temperature below a temperature threshold.