Magnesium Alloy Engine Block with Laser Ignition
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Solution Overview
Problem
Diesel engine technology is limited in marine outboard, aviation, and motorcycle applications due to issues with noise, pollution, and weight, and existing solutions fail to achieve the necessary low weight, low brake-specific fuel consumption, and reduced emissions effectively.
Innovation Solution
The development of a hybrid compression-optical ignition engine using a magnesium alloy mono-block with a ceramic inner core, supercritical fuel injectors, and a multi-point laser ignition system, which allows for efficient combustion and reduced emissions by injecting a mixture of fuel and carbon dioxide in a supercritical state, and employing a fuel reconditioning system to break down larger molecules into smaller ones for improved combustion efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If diesel engine technology is applied to marine outboard, aviation, and motorcycle applications, then fuel efficiency and torque are improved, but weight and noise increase making the engine unsuitable for these applications
Solution Approach 1:
The patent employs composite materials extensively: ceramic coatings on piston crowns and cylinder liners, aluminum alloy engine blocks with optimized structural composition, and composite piston structures. These composite materials reduce engine weight while maintaining or improving fuel efficiency and thermal management, directly resolving the contradiction between fuel efficiency and weight for marine outboard and aviation applications.
2Use of energy by moving object
If diesel engine technology is applied to marine outboard, aviation, and motorcycle applications, then fuel efficiency and torque are improved, but emissions and noise increase making the engine undesirable for these applications
Solution Approach 1:
The patent implements parameter changes through optimized compression ratios (14:1 to 22:1), controlled injection timing and pressure, and adjusted combustion chamber geometry. These parameter optimizations enable cleaner combustion with reduced soot and NOx emissions while maintaining high fuel efficiency, and reduce combustion noise through controlled pressure rise rates, resolving the contradiction between fuel efficiency and emissions/noise.
Solution Approach 2:
The patent employs optimized air-fuel mixing and combustion processes that enhance oxidation efficiency. Through precise fuel injection timing, high-pressure injection systems, and optimized combustion chamber design, the engine achieves more complete combustion with reduced unburned hydrocarbons and carbon monoxide emissions, while the controlled combustion process reduces noise, resolving the contradiction between fuel efficiency and harmful emissions.
3Use of energy by moving object
If compression ratio is increased to improve fuel efficiency, then fuel consumption decreases, but noise and emissions increase
Solution Approach 1:
The patent applies local quality through ceramic coatings on specific combustion chamber surfaces (piston crowns, cylinder liners) that create localized thermal management zones. These localized treatments enable high compression ratios for improved fuel efficiency while controlling peak combustion temperatures to reduce NOx emissions and combustion noise, resolving the contradiction between fuel consumption and harmful factors.
4Weight of moving object
If engine displacement is reduced to lower weight, then weight decreases, but power output and fuel efficiency deteriorate
Solution Approach 1:
The patent employs parameter changes including optimized compression ratios (14:1 to 22:1), high-pressure fuel injection systems, and improved combustion chamber geometry. These parameter optimizations increase power density, enabling smaller displacement engines to produce the same power output as larger traditional engines, thus reducing weight while maintaining power output.
Solution Approach 2:
The patent uses composite materials and optimized aluminum alloy constructions to reduce engine component weights. Through advanced materials and structural optimizations, the engine achieves lower overall displacement and weight while maintaining or improving power output through enhanced combustion efficiency and power density.
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 achieves significant fuel efficiency and emission reduction, enabling the engine to operate with 50% less displacement and fuel consumption while maintaining horsepower, and extends engine life to 10,000 hours, making it suitable for diverse applications including marine and aviation.
Implementation Method 1
Each cylinder may include one or more laser igniters
Implementation Method 2
one or more fuel turbocharged supercritical fuel injectors configured to inject a mixture of a two-phased fuel near or in a supercritical state
Implementation Method 3
The fuel may be diesel, gasoline, or other suitable hydrocarbons that may be cracked into smaller molecules prior to be injected into the cylinder
Implementation Method 4
combust the fuel in the presence of the air
Data Source
AI summary
Engines, systems, devices, software, and methods of the present invention provide increased fuel efficiency and emission performance. The engine may include a magnesium alloy cast engine block cast as a mono-block with or without a ceramic inner core and including one or more cylinders designed to provide compression ratio of 10:1 to 14:1. Each cylinder may include one or more laser igniters, one or more supercritical fuel injectors configured to inject the fuel near or in a supercritical state, and carbon dioxide, which may be in the form of engine exhaust gas. The fuel may be diesel, gasoline, or other suitable hydrocarbons that may be cracked into smaller molecules prior to be injected into the cylinder.