Results 11 to 20 of about 2,452,401 (315)

Near-zero emissions with high thermal efficiency realized by optimizing jet plume location relative to combustion chamber wall, jet geometry and injection timing in a direct-injection hydrogen engine

open access: yesInternational journal of hydrogen energy, 2019
Thermal efficiency was substantially improved and NOx emissions were reduced to a level at a single-digit ppm with PCC combustion by optimizing such characteristics as the direction, number and diameter of the injected jet and controlling the injection ...
Y. Takagi   +4 more
semanticscholar   +1 more source

A Review of Heavy-Duty Vehicle Powertrain Technologies: Diesel Engine Vehicles, Battery Electric Vehicles, and Hydrogen Fuel Cell Electric Vehicles

open access: yesClean Technology, 2021
Greenhouse gas emissions from the freight transportation sector are a significant contributor to climate change, pollution, and negative health impacts because of the common use of heavy-duty diesel vehicles (HDVs).
Carlo Cunanan   +5 more
semanticscholar   +1 more source

Hydrogen storage in engineered carbon nanospaces [PDF]

open access: yesNanotechnology, 2009
It is shown how appropriately engineered nanoporous carbons provide materials for reversible hydrogen storage, based on physisorption, with exceptional storage capacities (approximately 80 g H2/kg carbon, approximately 50 g H2/liter carbon, at 50 bar and 77 K). Nanopores generate high storage capacities (a) by having high surface area to volume ratios,
Burress, Jacob W., 1983-   +6 more
openaire   +2 more sources

Hydrogen-fueled internal combustion engines [PDF]

open access: yesProgress in Energy and Combustion Science, 2009
Abstract The threat posed by climate change and the striving for security of energy supply are issues high on the political agenda these days. Governments are putting strategic plans in motion to decrease primary energy use, take carbon out of fuels and facilitate modal shifts.
Verhelst, Sebastian, Wallner, Thomas
openaire   +3 more sources

Development of a large-sized direct injection hydrogen engine for a stationary power generator

open access: yesInternational journal of hydrogen energy, 2019
A number of studies on hydrogen engines have targeted small-sized engines for passenger vehicles. By contrast, the present study focuses on a large-sized engine for a stationary power generator.
Taku Tsujimura, Yasumasa Suzuki
semanticscholar   +1 more source

Greenhouse Gas Emissions of a Hydrogen Engine for Automotive Application through Life-Cycle Assessment

open access: yesEnergies
Hydrogen combustion engine vehicles have the potential to rapidly enter the market and reduce greenhouse gas emissions (GHG) compared to conventional engines.
Antonella Accardo   +4 more
semanticscholar   +1 more source

Hydrogen Internal Combustion Engine Vehicles: A Review

open access: yesEnergies, 2022
Motor vehicles are the backbone of global transport. In recent years, due to the rising costs of fossil fuels and increasing concerns about their negative impact on the natural environment, the development of low-emission power supply systems for ...
K. Wróbel   +5 more
semanticscholar   +1 more source

Review of the Current Status of Ammonia-Blended Hydrogen Fuel Engine Development

open access: yesEnergies, 2022
As fossil fuels continue to be extracted and used, issues such as environmental pollution and energy scarcity are surfacing. For the transportation industry, the best way to achieve the goal of “carbon neutrality” is to research efficient power systems ...
Xiaowei Xu   +4 more
semanticscholar   +1 more source

Start up system for hydrogen generator used with an internal combustion engine [PDF]

open access: yes, 1977
A hydrogen generator provides hydrogen rich product gases which are mixed with the fuel being supplied to an internal combustion engine for the purpose of enabling a very lean mixture of that fuel to be used, whereby nitrous oxides emitted by the engine ...
Cerini, D. J., Houseman, J.
core   +1 more source

Influences of hydrogen addition from different dual‐fuel modes on engine behaviors

open access: yesEnergy Science & Engineering, 2022
Compression ignition (CI) engines have good performance but more exhaust emissions. Dual fuel (DF) engines have better performance and lower emissions compared to CI mode.
S. Khandal   +5 more
semanticscholar   +1 more source

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