Power and Propulsion
Engine efficiency

Latest Stories

Editorial
Propulsion

Sunset for the American V8

Technologies transition from dominance to nearly dead at different speeds and for various reasons. That’s particularly true for motive power. Pistons, cams and valves are giving way to anodes, cathodes and...

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Technical Innovation
Power

Tula’s DMD Promises Gains in EV Efficiency

Nestled in San Jose, California just south of the San Francisco Bay, the small but mighty team at Tula Technologies continues to develop advancements for optimizing the efficiency of ICE and...

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Articles
Power

Tension and the Electric Takeover

Something happened in September 2022 that can be seen as emblematic of the auto industry’s accelerating transition to electrification: Tesla’s Model Y was Europe’s best-selling vehicle. An EV as...

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Editorial
Power

Engine Technology a Decade Later

A securities analyst from New York called me recently, to ask about the future of powertrain. Specifically, she wanted my prediction for a timeframe for the demise of both gasoline and diesel IC engines....

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Technology Report
Power

Light-vehicle Horsepower Hits Historic High in 2021

Full-electric propulsion for the U.S.’s light-vehicle market segments is gaining momentum, but developers of the internal-combustion engine aren’t throwing in the towel just yet....

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Briefs
Materials

Fatigue Behavior of an Advanced Melt-Infiltrated SIC/SIC Composite with Environmental Barrier Coating at 1200°C in Air and in Steam

SiC fiber-reinforced SiC matrix composites are being evaluated for aircraft engine hot-section components.

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Q&A
Manned Systems

Advancing the OP Engine on Three Fronts

Global demand for cleaner, more power-dense internal combustion engines (ICE) is expected to continue into the middle of this century, for a variety of vehicle applications and markets. San...

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News
Power

Bigger Processors, Smaller Engines

Engine designers are advancing electronic control systems to eliminate components and generate more power from smaller engines. They also are leveraging networks to integrate transmissions, global...

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Q&A
Manned Systems

Cummins Unveils EPA-Compliant 2021 Heavy-Duty Diesels

Cummins reserved its first virtual press event since the pandemic onset to reveal details of its EPA 2021 emissions-compliant X12 and X15 Performance Series engines. Built upon the...

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Articles
Mechanical & Fluid Systems

An Exhaust Symphony in the Key of C8

Few things in the automotive space are more soul-stirring than the sound of a V8 engine – at wide-open throttle, or top-gear cruising, or at any combination of engine speed and load in between. For...

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Technical Innovation
Energy

Electric Actuators Can Benefit Heavy-Duty Diesels

As the heavy-duty diesel (HDD) truck world looks to likely future alternative power sources – battery or fuel cell – R&D into improving internal-combustion engine (ICE)...

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Technology Report
Energy

BP’s Nexcel Sealed-Cell Oil System an Alternative for Controlling GHG Emissions

The automotive industry is broadening its spectrum of technology to support the reduction of global greenhouse gases not just via electric drivetrains and...

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News
Power

Many ICE Paths Lead to Reduced Emissions

Despite all the hype about electrification, internal combustion engines (ICEs) are likely to dominate the commercial vehicles market for several years. But these engines will have to advance using...

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Articles
Power

Starship Road Trip

Dubbed the Starship Initiative, the collaboration between Shell and AirFlow Truck Co. on the Starship Class 8 concept truck achieved 178.4 ton-mpg for freight ton efficiency (FTE) in a recent cross-country drive, a...

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Articles
Manufacturing & Prototyping

CAM Software Technology Keeps Pace with Aerospace Manufacturing Challenges

Aerospace industry component manufacturing is in a large growth cycle. Advancements to materials and engine efficiency have created clear benefits for replacing a...

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Articles
Aerospace

Using Sintered Fiber Metal Composites for Aircraft Acoustic Attenuation

Sintered fiber metal composites are used in aircraft as an acoustic media within environmental ducting, inlet and exhaust systems. The material can be engineered to meet...

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News
Manufacturing & Prototyping

Making Strides in Sustainable Transportation

A material scientist by training working on processing, manufacturing, and characterization development for advanced energy storage systems, Claus Daniel, Ph.D., organized the Lightweighting...

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Articles
Aerospace

Commercial Programs Are Flying High

Boeing and Airbus can hardly keep up with demand for 150-seat jets, and both have increased their own monthly production rates to well over 40 aircraft, stretching the capacity of the supply chain to the...

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Articles
Aerospace

More Electric, Integrated Fuel Systems

Global warming and environmental friendliness considerations have recently been key for multiple global industries. In the commercial aviation industry, reduction of aircraft emissions, including...

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Briefs
Electronics & Computers

Implementing Interconnected Generation in Future Civil Aircraft

In addition to providing thrust, the engines on conventional civil jet airliners generate power for onboard systems and ancillary loads in the form of pneumatic, hydraulic, and...

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Briefs
Physical Sciences

Quantitative Analysis of a Hybrid Electric Humvee for Fuel Economy Improvement

The Army has acquired several hybrid platforms to assess the applicability of hybrid technology for military missions. These hybrid platforms include both series...

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