On this page, I report a list of scientific and technical documents regarding the use of molecular hydrogen in classic internal combustion engines.
Practically, use hydrogen to enrich hydrocarbon fuels to increase combustion efficiency, improve engine performance, and make the engine cleaner during operation, thus less carbon deposit in combustion chambers and exhaust ducts, decrease in polluting particles and exhaust gases, decrease in fuel consumption, increase in the life cycle of the engine.
There are various technological solutions in the world, developed by innovative companies.
Some solutions are easy to implement on a classic engine, such as injecting molecular hydrogen – produced by highly efficient electrolysis with innovative electronic systems with particular frequencies and pulses – into the engine’s intake duct.
Other solutions, however, are more complex, such as injecting molecular hydrogen directly into the combustion chambers with special injectors.
Interestingly, many mechanical engineers are not convinced of the great potential of injecting molecular hydrogen into internal combustion engines to create innovative ecological engines. And also more reliable over time…
Below is a list of interesting scientific and technical documents:
Influence of hydrogen co-combustion with diesel fuel on performance, smoke and combustion phases in the compression ignition engine
Investigations of emission characteristics and thermal efficiency in a spark ignition engine fuelled with natural gas–hydrogen blends
Influence of hydrogen as a fuel additive on combustion and emissions characteristics of a free-piston engine
Influences of hydrogen on the performance and emission characteristics of a heavy-duty natural gas engine
A prediction study of the effect of hydrogen blending on the performance and pollutant emission
Effect of Hydrogen–Oxygen Mixture Addition on Exhaust Emissions and Performance of a Spark Ignition Engine
Comparing the effects of Hydrogen addition on performance and exhaust emission in a spark ignition fueled with gasoline and CNG
Analysis of Hydrogen Enrichment in Gasoline-Fueled Premixed Spark-Ignition Engine
Experimental investigations of combustion performance and emission characteristics of a hydrogen-enriched natural gas-fuelled prototype spark ignition engine
Effect of compression ratio, equivalence ratio and engine speed on the performance and emission characteristics of a spark ignition engine using hydrogen as a fuel
Improvement of performance and reduction of pollutant emission of a four-stroke spark ignition engine fueled with hydrogen±gasoline fuel mixture
Experimental Investigation of Hydrogen Enrichment on Performance and Emission Behaviour of Compression Ignition Engine
The effect of H2 purity on the combustion-performance-emissions and energy costs in an si engine
Optimization and study of performance parameters in an engine fueled with hydrogen
Performance Evaluation of Hydrogen-Fuelled Spark Ignition Engine – A Review
An experimental study on performance and emission characteristics of a hydrogen-fuelled spark ignition engine
Experimental Investigation of the Effect of Hydrogen Addition on Combustion Performance and Emissions Characteristics of a Spark Ignition
Performance and emission characteristics of hydrogen-fueled spark ignition engine
Role of mixture richness, spark and valve timing in hydrogen-fuelled engine performance and emission
USA Patent 1978 – A hydrogen-oxygen-fueled internal combustion engine
The design and testing of a hydrogen-fueled internal combustion engine
Recent progress in the use of hydrogen as a fuel for internal combustion engines
NASA 1970 Hydrogen Oxygen Powered Internal Combustion Engine
Investigation of hydrogen usage on combustion characteristics and emissions of a spark ignition engine
Influence of natural gas and hydrogen properties on internal combustion engine performance combustion and emissions – A review
Influence of hydrogen on engine emissions – A review
Hydrogen Injection in Air Breathing Engines for Better Efficiency
Hydrogen Fueled Internal Combustion Engine – A Review
Hydrogen as fuel in internal combustion engine
Hydrogen Application as a Fuel in Internal Combustion Engines
Hydrogen An Alternative Fuel for Automotive Diesel Engines Used in Transportation
Experimental investigation of the effects of hydrogen-enhanced combustion in si and ci engines on performance and emissions
Evaluation of Emission Characteristics of Hydrogen as a Boosting Fuel in a Four-Stroke Single-Cylinder Gasoline Engine
Combustion Performance and Emission Characteristics of Hydrogen as an Internal Combustion Engine-Fuel
Aspects of an experimental study of hydrogen use at automotive diesel engine
Application of Hydrogen as Fuel Supplement in Internal Combustion Engines A Brief Review
A Practical Study of Using Hydrogen in Dual–Fuel Compression Ignition Engine
An experimental investigation on engine performance and emissions of a single-cylinder diesel engine using hydrogen as inducted fuel and diesel as injected fuel with exhaust gas recirculation
THE EFFECT OF COMBUSTION DURATION ON THE PERFORMANCE AND EMISSION CHARACTERISTICS OF PROPANE-FUELED 4-Stroke S.I. ENGINES
Effect of hydrogen and oxygen addition as a mixture on emissions and performance characteristics of a gasoline engine
Effect of Hydrogen-Diesel Dual Fuel Combustion on the Performance and Emission Characteristics of a Four Stroke-Single Cylinder Diesel Engine
Effect of hydrogen–diesel dual-fuel usage on performance, emissions and diesel combustion in diesel engines
ENGINE PERFORMANCE OF OPTIMIZED HYDROGEN-FUELLED DIRECT INJECTION ENGINE
Experimental assessment of performance and emissions for hydrogen-diesel dual fuel operation in a low displacement compression ignition engine
Experimental Investigation of the Effects of Hydrogen Addition with Diesel on Performance and Emission of a Single-Cylinder Diesel Engine
EXPERIMENTAL INVESTIGATION ON PERFORMANCE AND EMISSION CHARACTERISTICS OF DUAL FUEL SPLIT INJECTION OF ETHANOL AND DIESEL IN CI ENGINE
INFLUENCE OF HYDROGEN AS A FUEL ADDITIVE ON COMBUSTION AND EMISSIONS CHARACTERISTICS OF A FREE PISTON ENGINE
INVESTIGATION OF THE EFFECTS OF HYDROGEN ADDITION ON PERFORMANCE AND EXHAUST EMISSIONS OF DIESEL ENGINE
Numerical evaluation of internal combustion spark ignition engines performance fuelled with hydrogen e Natural gas blends
SOME ASPECTS OF HYDROGEN APPLICATION AS A SUPPLEMENTARY FUEL TO THE FUEL-AIR MIXTURE FOR INTERNAL COMBUSTION ENGINES
THE EFFECTS OF SMALL AMOUNT OF HYDROGEN ADDITION ON PERFORMANCE AND EMISSIONS OF A DIRECT INJECTION COMPRESSION IGNITION ENGINE
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