Gas Engine Piston Cooling Control for Hydrogen Blend Pre-Ignition
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Solution Overview
Problem
Existing piston cooling systems for gas engines using hydrogen/hydrocarbon gas substitution ratios face limitations, particularly in preventing premature ignitions due to thermodynamic changes.
Innovation Solution
A cooling system for gas engine pistons that controls cooling oil flow based on predetermined parameters such as hydrogen concentration or hydrogen/hydrocarbon gas substitution ratios, rather than solely relying on real-time piston temperature, to prevent pre-ignition incidents.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If real-time piston temperature control is used, then piston temperature management is effective, but system complexity and maintenance costs increase
Solution Approach 1:
The invention changes the control parameter from real-time temperature to predetermined operating parameters (hydrogen concentration, substitution ratio). This allows effective temperature management through simpler parameter-based control rather than complex real-time temperature monitoring and adjustment systems.
Solution Approach 2:
The control device determines the cooling oil flow rate in advance based on predetermined parameters before actual combustion occurs. This preliminary determination eliminates the need for complex real-time temperature-based control systems while maintaining effective piston temperature management.
2Reliability
If cooling oil flow is increased to prevent pre-ignition, then pre-ignition prevention improves, but energy consumption and system complexity increase
Solution Approach 1:
The invention adjusts cooling oil flow rate based on hydrogen concentration and substitution ratio parameters. By increasing cooling flow when hydrogen content is high (pre-ignition risk) and reducing it when hydrogen content is low, the system prevents pre-ignition reliably while optimizing energy consumption rather than using constant high-flow cooling.
Solution Approach 2:
The cooling oil flow rate is made dynamic and adjustable based on operating conditions (hydrogen concentration, substitution ratio) rather than fixed. This dynamic adjustment prevents pre-ignition when needed while reducing unnecessary energy consumption when pre-ignition risk is low.
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 manages piston temperature by reducing complexity and maintenance costs while preventing pre-ignitions, making it more reliable and cost-effective for engines operating with varying hydrogen/hydrocarbon gas blends.
Implementation Method 1
a cooling oil supply (12) configured to feed a cooling oil flow (14) to the gas engine piston (100)
Data Source
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AI summary
The present invention pertains A cooling system (10) for a gas engine piston (100), the system comprising a cooling oil supply (12) configured to feed a cooling oil flow (14) to the gas engine piston (100), and a control device (16) configured to control the cooling oil flow (14) based at least on a predetermined parameter (18). The present invention further pertains to a gas engine (200) comprising at least one gas engine piston (12) and a cooling system (10) according to any of the previous claims, wherein the gas engine piston (12) is configured to be operable with at least one combustion gas (20). In addition, the present disclosure pertains to a cooling method for a gas engine piston (100), comprising the steps of receiving (S10) at least one predetermined parameter (18) at the control device (16); controlling (S20) the cooling oil flow (14) based on at least the predetermined parameter (18); and observing (S30) a sufficient cooling oil flow (14) fed to the gas engine piston (100).