article thumbnail

Small-displacement two-stroke H2 engine could address performance and emissions cost-effectively for recreational market; potential for Asian motor vehicle fleet

Green Car Congress

Comparison of brake thermal efficiency and specific fuel consumption at rated power (ICOMIA Mode 5), hydrogen vs. gasoline engines. This is due to raw, externally premixed fresh charge comprising air, fuel and lube oil being short-circuited into the exhaust during the scavenging process. Oh and Plante. Click to enlarge.

Engine 329
article thumbnail

New FOX method estimates black carbon emissions from civil aviation ~2.7 times higher than standard estimates

Green Car Congress

Comparison between estimated EI BC and measured EI BC derived FOA3 (black open box), the FOA3 approach with the updated SN-CI correlation (blue triangle), and estimates obtained from the new FOX method (red circle) that are not dependent on SN. Credit: ACS, Stettler et al. Click to enlarge. near the ground).

Emissions 199
article thumbnail

Study suggests high-mileage light-duty fleets contribute higher emissions and emissions share than expected

Green Car Congress

One segment of the on-road fleet that is believed to drive more miles and consume more fuel than the average fleet vehicle is livery (for-hire) vehicles, such as taxis and limousines. Livery fleets have changed significantly in the past decade, with many city fleets now featuring large numbers of hybrid and alternatively fueled vehicles.

Emissions 150
article thumbnail

Polystyrene-Biodiesel Blends for Energy Recovery from Waste Plastics

Green Car Congress

Comparisons of NO x , CO, soot, and engine brake power using different PS blends with the factory-set injection timings. Researchers at Iowa State University are proposing dissolving waste polystyrene (PS) in biodiesel for use as a diesel engine fuel as a mechanism for energy recovery from the waste plastic. Credit: ACS. Credit: ACS.

Waste 207
article thumbnail

Road Test: 2021 Ford Mustang EcoBoost Premium

Clean Fleet Report

came to life with a throaty note that would grumble and pop from the active valve performance exhaust system. This adaptive system, which amplifies the sound, has exhaust settings such as sport and track, making for a pleasant reminder you are driving a high-performance car. Then, for comparison take a spin in the Mustang GT or Mach 1.

Ford 86
article thumbnail

Road Test: 2023 Volkswagen Taos SEL 4Motion

Clean Fleet Report

The twin faux exhaust ports on the lower rear fascia actually don’t look too bad, and the star-patterned 19-inch machined alloy wheels look great. When comparison shopping compact SUVs, if a plusher interior is a pacing item, the Taos may be a bit Spartan. The lack of needless chrome and cladding is what makes the Taos design a winner.

article thumbnail

Road Test: 2021 Volkswagen Atlas Cross Sport V6 SEL Premium R-Line

Clean Fleet Report

Tastefully placed chrome trim and accents are on the grille, roof rack rails, lower doors, window surrounds, the faux exhaust ports, and the eyebrow strip that runs the full length of the rear power lift gate between the LED tail lights. Road Test: 2018 Chevrolet Traverse: 3-Row SUV Comparison. Road Test: 2021 Hyundai Palisade.

MPG 84