Engine Cooling Circuit Air Bubble Evacuation via Gasket Passages
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Solution Overview
Problem
Internal combustion engine cooling systems face issues with steam bubbles forming in the cylinder block cooling circuit, leading to trapped air bubbles, which can affect engine performance and thermal management.
Innovation Solution
The cooling system incorporates cylinder block core print channels with passages connecting to a groove on the cylinder head, allowing air/steam bubbles to be collected and discharged, while maintaining separate control of the cylinder block and cylinder head cooling circuits without additional components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a separate cooling circuit is provided for the cylinder block, then the cooling control for the cylinder block is improved, but air/steam bubbles accumulate in the upper portion of the cooling circuit
Solution Approach 1:
The invention extracts and removes air/steam bubbles from the cooling circuit by providing a dedicated evacuation path through passages (600) that connect the cylinder block core print channels (550) to a groove (510) on the cylinder head. This allows bubbles to be separated from the main coolant flow and discharged through the outlet (590), resolving the bubble accumulation problem while maintaining separate cooling circuit control.
2Reliability
If passages are added to connect cylinder block cooling circuit with groove, then bubble evacuation is improved, but device complexity increases
Solution Approach 1:
The invention merges the bubble evacuation function with existing structural elements of the engine. The passages (600) are integrated into the gasket (580) that already seals the interface between the cylinder head and cylinder block, and the groove (510) is formed on the deckface of the cylinder head. This combining approach adds bubble evacuation capability without requiring separate dedicated components, thus minimizing increased device complexity.
Solution Approach 2:
The groove (510) on the cylinder head deckface serves multiple functions: it acts as a collection chamber for air/steam bubbles from the cylinder block cooling circuit, and also connects to the cooling system outlet (590) for discharging bubbles. This multi-functional design eliminates the need for separate bubble collection and discharge components, reducing overall device complexity.
3Reliability
If passages are provided in the gasket, then fluidic continuity for bubble discharge is improved, but manufacturing precision requirements increase
Solution Approach 1:
The passages (600) are integrated directly into the gasket (580) structure, combining the sealing function and the bubble evacuation function in a single component. This integration ensures that the passages are naturally aligned with both the cylinder block core print channels (550) and the groove (510) on the cylinder head, as the gasket is designed to fit the specific interface geometry. This approach maintains manufacturing feasibility while ensuring fluidic continuity for reliable bubble discharge.
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 effectively evacuates air/steam bubbles from the cylinder block cooling circuit, optimizing thermal management and preventing bubble accumulation, thus enhancing engine performance without increasing costs.
Implementation Method 1
steam bubbles may be formed therein in case of boiling phenomena that may occur during operation of the engine. In general air bubbles could be present in the cylinder block cooling circuit and therefore could remain trapped within the cylinder block cooling circuit, especially in its upper portion
Data Source
AI summary
A cooling system for an internal combustion engine is disclosed. The engine has a cylinder block and a cylinder head. The cooling system includes a cylinder head cooling circuit and a cylinder block cooling circuit. The cylinder block cooling circuit includes cylinder block core prints channels on an upper portion thereof. The cylinder head cooling circuit includes a groove connected to an outlet of the cooling system and at least one cylinder block core print channel provided with at least one passage connecting the cylinder block cooling circuit with the groove.