Transverse Cooling Jacket Flow for Engine Thermal Management
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Solution Overview
Problem
Existing internal combustion engine cooling systems suffer from long heating-up times due to large coolant volumes and longitudinal coolant flow, which necessitate large cooling jacket cross-sections and numerous external lines between the cylinder head and cylinder block.
Innovation Solution
The cooling system employs a transverse coolant flow path with a collecting chamber or distributor chamber, eliminating the need for external lines and allowing a reduced cooling jacket cross-section, with the second cooling jacket being activated or deactivated as needed to ensure heat removal from thermally loaded regions, and integrating the coolant pump with the camshaft for reduced volume and rapid heating.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If longitudinal coolant flow through the cooling jacket is used, then the coolant can be distributed along the engine length, but the cooling jacket cross-section must be relatively large and heating-up time is extended
Solution Approach 1:
The patent changes the coolant flow direction from longitudinal (along the engine length) to transverse (across the engine width). This dimensional change allows the cooling jacket cross-section to be reduced while maintaining effective cooling coverage, and significantly reduces the coolant volume required, thereby decreasing heating-up time.
2Reliability
If external lines are used to connect cooling jackets between cylinder head and cylinder block, then cooling paths can be established, but the number of external lines increases and system complexity increases
Solution Approach 1:
The patent merges the cooling jacket functions of the cylinder head and cylinder block into an integrated system. The transverse flow path allows the cooling jackets to be directly connected without requiring multiple external lines, thereby reducing system complexity while maintaining reliable cooling path connectivity.
3Adaptability or versatility
If a separate coolant circuit with multiple valves and external lines is used, then cooling control can be achieved, but the coolant volume increases and heating-up time is extended
Solution Approach 1:
The patent extracts and eliminates unnecessary components from the separate coolant circuit system. By using a transverse flow path with integrated cooling jackets, the system removes the need for multiple external lines and complex valve arrangements, thereby reducing coolant volume and heating-up time while retaining essential cooling control capability through the thermostat valve.
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 configuration significantly reduces coolant volume, achieving shorter heating-up times and efficient heat removal from critical regions, while simplifying production by eliminating the need for additional structural measures in the cylinder head.
Implementation Method 1
efficient heat removal from critical regions
Implementation Method 2
a liquid coolant can flow through the first cooling jacket and the second cooling jacket in succession
Data Source
AI summary
The invention relates to a cooling system (4) for an internal combustion engine having at least one cylinder head (1), the at least one cylinder head being connected to at least one cylinder block (2) by means of a cylinder-bead sealing surface (28). The cooling system comprises at least one first cooling jacket (5) arranged in the cylinder head (1), the at least one first cooling jacket having a flow connection to at least one coolant inlet (27) and at least one first coolant outlet (19), and at least one second cooling jacket (6) arranged in the cylinder block (2), the at least one second cooling jacket being connected to at least one second coolant outlet (20) in the cylinder head (1), wherein the first cooling jacket (5) and the second cooling jacket (6) are connected to each other by means of at least one connection flow path (17), which preferably extends through an opening (17a) in the cylinder-bead sealing surface (28), and a liquid coolant can flow through the first cooling jacket and the second cooling jacket in succession, and wherein the coolant flow through the second cooling jacket (6) can be controlled by means of at least one first valve (8), preferably a thermostat valve, which blocks the coolant flow through the second cooling jacket (6) in a first valve position and allows the coolant flow through the second cooling jacket in at least one second valve position. In order to enable quick heating of the coolant while achieving optimal cooling of the internal combustion engine, flow through the first cooling jacket (5) according to the invention is possible in a transverse direction of the internal combustion engine.