Recent studies have critically assessed the carbon intensity of ethanol and show that while the fuel has significantly improved over time, significant further improvements are to come.
California is looking to reduce NOx emissions from non-road engines by 90% and enforce particulate filters on all engines. Here is a summary of the latest workshop to get stakeholder feedback on Tier 5 standards.
Notes from the 2023 Sustainable Fleet Technology Conference covering a wide range of practical issues for fleet decarbonization
Given the lack of MY 2024 compliant new engine introductions, California has proposed an amendment to its low NOx omnibus, providing more flexibility for legacy engines.
Here’s the first look at the CAFE standards proposed by NHTSA for model year 2027 through 2032 cars and light trucks. More to come.
California and Truck & Engine Manufacturers have reached a deal on low NOx and electrification targets in the state. This paves the way for more regulatory certainty but the challenges ahead are not diminished.
Opposed piston engines are being developed as a tool to reduce CO2 and NOx emissions from heavy-duty trucks. Here’s a deeper look into this technology and recent test results.
A downloadable summary of the U.S. EPA announced the Phase 3 GHG proposal for heavy-duty vehicles. From 2027 to 2032, 45% reduction in CO2 emissions for light vocational vehicles and 25% for Class 8 sleeper cabs. Over half of light vocational and a quarter of sleeper cabs expected to be ZEVs by 2032.
How are light-duty cars and trucks expected to meet future EPA fuel economy standards? What level of electrification would be required? Would hybrids play a role? How does one go about calculating it? Here’s a case study attempting to address some of these questions.
Summary of per mile energy consumption of leading electric vehicles. Looking cool in the electric Hummer? Check. Helping the environment? Not so much.
