Motors
Digital Exclusive: Mitigating structural resonance in an electric motor support: A field case study
Rotating equipment operating near structural natural frequencies is prone to resonance, resulting in elevated vibration levels and potential long-term damage. This article discusses a field case involving persistent axial vibration on an electric motor despite acceptable performance during decoupled workshop testing. The discrepancy prompted a full diagnostic investigation, including bump testing, modal analysis and structural reinforcement.
Yuchai introduces its first high-pressure, direct-injection pure ammonia internal combustion engine for heavy-duty commercial vehicles
China Yuchai International has introduced its first high-pressure, direct-injection internal combustion engine capable of operating entirely on ammonia and designed for heavy–duty commercial vehicles.
U.S. sues California over zero emissions vehicle, greenhouse gas rules
The U.S. Transportation Department sued the California Air Resources Board (CARB) in U.S. District Court in California over vehicle rules that remain in place after President Donald Trump signed legislation last year to overturn California’s Advanced Clean Cars II rules that aim to phase out new gasoline-powered cars by 2035.
Trump EPA ends emissions limits for U.S. automakers; state rules, lawsuits could follow
Trump's Environmental Protection Agency (EPA) on Thursday finalized its repeal of the "endangerment finding" for vehicles, a 2009 determination that greenhouse gas emissions endanger human health.
Digital Exclusive: Mitigating structural resonance in an electric motor support: A field case study
Rotating equipment operating near structural natural frequencies is prone to resonance, resulting in elevated vibration levels and potential long-term damage. This article discusses a field case involving persistent axial vibration on an electric motor despite acceptable performance during decoupled workshop testing. The discrepancy prompted a full diagnostic investigation, including bump testing, modal analysis and structural reinforcement.
EIA: U.S. transportation fuel demand remains below pre-pandemic levels
Five years after the COVID-19 national emergency was declared, gasoline demand, distillate demand and jet fuel demand all remain less than pre-pandemic averages.
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