Keyword: Diesel fuels

Briefs: Green Design & Manufacturing
A new catalyst and microchannel reactors improve efficiency and cost of the process.
Briefs: Energy

Batteries and combustion engines each have distinctive benefits and limitations. Batteries have simple construction and operate silently; however, their energy density (i.e., the energy per unit volume) is poor, and...

Articles: Aerospace
Airfoil Performance Monitor (APM) John Maris, Puthy Soupin, Ludovic Laberge, and Marie-Hélène Larose
Marinvent Corporation
Saint-bruno, Quebec, Canada...
Briefs: Materials
Self-Lubricating Hard Coatings for Extreme Environments

NASA’ s space goals include a permanent presence on the Moon and an expedition to Mars. The success of habitats and vehicles on the Moon and Mars — and ultimately, of the human exploration of and permanent human presence on the Moon and Mars — is critically dependent on the correct...

Briefs: Green Design & Manufacturing
Methods for Purifying Enzymes for Mycoremediation

This process applies to remediation and restoration of soils contaminated by fuel, polychlorinated biphenyl wastes, etc. While there can be a general beneficial effect of microbial communities, individual plant-fungus combinations can vary in their efficacy in removal of pollutants from the...

Briefs: Energy

NASA has invented an innovative method to grow algae, clean wastewater, and capture carbon dioxide to ultimately produce biofuel. The invention consists of floating...

Articles: Automotive
HYLIION - HYBRID TECHNOLOGY FOR SEMI-TRAILERS AND THE TRUCKING INDUSTRY

Thomas Healy, RF Culbertson, AJ Emanuele, Morgan Culbertson, Wilson Sa, Pam Culbertson, Chad Saylor, Len...

Application Briefs: Test & Measurement

Torque is among the most important of all the measured quantities in applications ranging from characterizing high-power gas turbines, to determining the level of force...

Briefs: Test & Measurement
Estimation of Algae Growth Stage, Growth Rate, and Lipid Content

This invention provides a method using light of different wavelengths to estimate freshwater and marine algae growth stage and algae growth rates as well as lipid content in standard media. Light absorption by the algae is measured for a specified light intensity in each of two or...

Articles: Robotics, Automation & Control
Fuel Flexible, Ultra-Portable Microturbine Generator Erik Herold, Jason Ethier, and Ivan Wang
Dynamo Micropower,
Boston, MA

A large unmet need in the oil...

Briefs: Lighting

A new mobile lighting system features a fuel cell running on pure hydrogen, resulting in zero-emission electrical power. The fuel cell produces electricity for an advanced, power-saving...

Briefs: Physical Sciences
Criteria for Modeling in LES of Multicomponent Fuel Flow

A report presents a study addressing the question of which large-eddy simulation (LES) equations are appropriate for modeling the flow of evaporating drops of a multicomponent liquid in a gas (e.g., a spray of kerosene or diesel fuel in air). The LES equations are obtained from the direct...

Articles: Nanotechnology

The 2008 NASA Tech Briefs National Nano Engineering Conference (NNEC), be held November 12-13 at the Boston Colonnade Hotel, is for design engineers who want to know what’s real, what’s close to...

Articles: Manufacturing & Prototyping

The 2007 NASA Tech Briefs (NTB) and Photonics Tech Briefs (PTB) Readers’ Choice Product of the Year Awards were presented recently by the editors of NTB and PTB at an awards...

Briefs: Physical Sciences

An improved statistical model has been developed to describe the chemical composition of an evaporating multicomponent- liquid drop and of the mixture of gases surrounding the drop....

Briefs: Mechanical & Fluid Systems
Hybrid Automotive Engine Using Ethanol-Burning Miller Cycle

A proposed hybrid (internal-combustion/ electric) automotive engine system would include as its internal-combustion subsystem, a modified Miller-cycle engine with regenerative air preheating and with autoignition like that of a Diesel engine. The fuel would be ethanol and would be...