Compact Engine Ventilation System for Faster Warm-Up
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Solution Overview
Problem
Current engine cooling systems face issues with air ingress, leading to thermal overload, reduced heat transfer efficiency, and increased coolant volume, which results in longer warm-up times, decreased fuel economy, and higher emissions due to the need for longer coolant hoses and increased weight.
Innovation Solution
A compact ventilation system is integrated into the engine's cooling circuit, with the ventilation vessel positioned above the inlet manifold and between the inlet manifold and the cylinder head, reducing coolant volume and hose length, and incorporating a pump for efficient coolant circulation and air removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the ventilation system is arranged at a distance from the internal combustion engine (on the bulkhead), then air and vapor bubbles can be effectively removed from the cooling circuit, but the coolant volume increases and the warm-up process becomes longer
Solution Approach 1:
The ventilation system is repositioned from a distant bulkhead location to a space above the inlet manifold that is vertically above but horizontally close to the engine. This dimensional repositioning allows the system to maintain effective air removal through buoyancy while significantly reducing coolant hose length and coolant volume, thereby accelerating warm-up time.
2Reliability
If the ventilation system is arranged on the bulkhead at a distance from the engine, then air can be removed from the cooling circuit, but the coolant hose length increases and manufacturing costs increase
Solution Approach 1:
The ventilation system utilizes the vertical space above the inlet manifold, positioning it directly over the engine rather than at a distant bulkhead location. This reduces the horizontal distance coolant hoses must travel, decreasing hose length, reducing material costs, and simplifying installation while maintaining air removal effectiveness through the vertical buoyancy path.
3Adaptability or versatility
If longer coolant hoses are used to connect the ventilation system to the engine, then the ventilation system can be positioned farther from the engine, but the weight of the cooling arrangement increases and fuel economy decreases
Solution Approach 1:
The solution positions the ventilation system in the vertical dimension directly above the inlet manifold rather than horizontally distant on the bulkhead. This maintains positioning flexibility while minimizing hose length, reducing cooling system weight, and improving fuel economy by eliminating the need for excessive coolant circulation.
4Loss of time
If the ventilation vessel is positioned above the inlet manifold close to the engine, then coolant volume is reduced and warm-up is accelerated, but the arrangement must be compact in a limited space
Solution Approach 1:
The ventilation system is integrated with existing engine components, specifically positioning it above the inlet manifold and utilizing the space within or adjacent to the valve cover assembly. This merging approach allows the ventilation function to be added without requiring separate mounting space, thereby reducing coolant volume and accelerating warm-up while avoiding increased spatial complexity.
Solution Approach 2:
The ventilation system is nested within the existing engine bay structure, utilizing the vertical space above the inlet manifold that is already part of the engine assembly. This nesting approach allows the ventilation vessel to be accommodated within the existing spatial envelope without requiring additional external space or complex routing.
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 arrangement accelerates engine warm-up, reduces emissions, decreases manufacturing costs, and enhances thermal regulation by minimizing coolant volume and hose length, thereby improving fuel economy and reducing thermal stress on the engine.
Implementation Method 1
The coolant may be conveyed, such that it circulates, via a pump which may arranged in the cooling circuit
Implementation Method 2
The heat may be dissipated to the coolant, which may be water, optionally mixed with additives, present in the coolant jacket of the cylinder head or block
Implementation Method 3
The discharge of air and vapor bubbles may occur via buoyant forces that act on the gas bubbles and drive the gases situated in the circuit upward and through the ventilation system
Implementation Method 4
The heat dissipated to the coolant is discharged from the interior of the cylinder head or block in this way, and may be extracted from the coolant again in a heat exchanger
Data Source
AI summary
Methods and systems are provided for a ventilation arrangement. In one example, a system may include a compact ventilation arrangement arranged within a space between an intake manifold and a cylinder head. A pump of the ventilation arrangement arrange adjacent the cylinder head.