Vehicle Engine Air Supply Condensation Control via Shutter Assembly
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Solution Overview
Problem
Modern vehicle engines face performance variability due to condensation issues in the air supply, which existing control systems are unable to effectively manage, leading to potential engine performance issues.
Innovation Solution
A system comprising a shutter assembly and a controller that determines conducive conditions for condensation in the engine air supply cooler, adjusting airflow to maintain intake air temperature above the condensation range, thereby controlling condensation and ensuring optimal engine performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the air supply cooler provides maximum cooling to the intake air, then the intake air temperature is reduced for improved engine efficiency, but condensation forms within the air supply cooler when ambient conditions are favorable
Solution Approach 1:
The shutter assembly is made dynamically adjustable to change the amount of ambient air incident on the air supply cooler. The controller dynamically modifies the shutter position based on real-time monitoring of ambient conditions (temperature, pressure, humidity, vehicle speed) and engine operating conditions, allowing the system to adapt between maximum cooling and condensation prevention modes
Solution Approach 2:
The system changes the physical parameters of the cooling process by adjusting the ambient air flow rate over the air supply cooler. When condensation risk is detected (intake air temperature within condensation temperature range determined from ambient temperature and pressure), the controller reduces the ambient air flow to raise the intake air temperature above the condensation range, thus eliminating condensation while maintaining acceptable cooling
2Object-affected harmful factors
If the shutter assembly is closed to prevent condensation, then condensation is controlled in the air supply cooler, but the cooling capacity of the intake air is reduced
Solution Approach 1:
The shutter assembly position is dynamically adjusted based on real-time conditions rather than being fixed. The controller continuously monitors ambient temperature, pressure, humidity, vehicle speed, and engine operating conditions to determine when condensation is likely and adjusts the shutter accordingly, allowing full cooling capacity when condensation is not a risk and partial restriction only when necessary
Solution Approach 2:
The shutter assembly is designed to provide partial restriction of ambient air flow rather than complete closure. The controller adjusts the shutter to reduce (but not necessarily eliminate) the ambient air incident on the air supply cooler, providing just enough reduction in cooling capacity to raise the intake air temperature above the condensation range while maintaining acceptable cooling performance
3Device complexity
If existing control systems are used without condensation-specific control, then the system complexity is low, but condensation issues cause engine performance variability
Solution Approach 1:
The controller integrates multiple functions: it monitors ambient conditions (temperature, pressure, humidity), monitors vehicle operating conditions (vehicle speed, engine operating mode), determines condensation risk by calculating the condensation temperature range, and controls the shutter assembly. This multi-functional approach consolidates what could be separate systems into a single integrated control unit, managing complexity while providing comprehensive condensation prevention
Solution Approach 2:
The system implements closed-loop feedback control by continuously monitoring ambient conditions and engine operating conditions, comparing the actual intake air temperature against the calculated condensation temperature range, and adjusting the shutter assembly position accordingly. This feedback mechanism ensures reliable prevention of condensation-related engine performance issues while maintaining efficient cooling when conditions permit
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 effectively reduces or eliminates condensation in the intake air, maintaining desired engine performance by adjusting the shutter assembly to manage airflow and cooling capacity based on ambient conditions.
Implementation Method 1
an air supply cooler configured to provide intake air to an engine, the air supply cooler being situated relative to the shutter assembly such that air flowing through the shutter assembly is incident on an exterior of the air supply cooler
Implementation Method 2
determine when at least one condition exists that is conducive to condensation within the air supply cooler... determining a condensation temperature range based on at least the ambient air temperature and the ambient air pressure; and determining whether an intake air temperature is within the condensation temperature range
Data Source
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AI summary
A system for controlling condensation associated with a vehicle engine air supply includes a shutter assembly configured to selectively allow airflow through the shutter assembly. An air supply cooler is configured to provide intake air to an engine. The air supply cooler is situated near the shutter assembly such that air flowing through the shutter assembly is incident on an exterior of the air supply cooler. A controller determines when at least one condition exists that is conducive to condensation within the air supply cooler and controls the shutter assembly to alter an amount of air incident on the exterior of the air supply cooler for controlling condensation in the air supply cooler.