PROPULSION FEATURE FROM LEFT: MTU; PACCAR The MTU Hybrid PowerPack for railcars combines a Stage V diesel engine with an electric machine used as a motor or generator and an MTU battery system that stores energy recovered during braking. "We used multi-shot injections on a diesel engine. We ran tests for 800 hours and found that the lubricity effect was okay. We saw some cavitation in the injector, but we feel we can redesign the injector and minimize the problem." Natural gas is a more mainstream approach, having already seen significant acceptance. It offers both lower pricing and cleaner performance compared to diesel, but the engine's purchase price is still an issue. Hydrogen fuel cells show promise as an alternative for longhaul trucks and other rugged applications like ships and trains. Shown is the Kenworth/Toyota fuel-cell electric truck. "For a 6.7-L product, the benefit of natural gas is that it's the lowest-NOx engine, with 50-90% lower emissions compared to diesel," said Yemane Gessesse, director of engineering at Cummins Westport Inc. "The initial pricing of LNG [liquefied natural gas] versions tends to be more expensive than the diesel counterparts. However, long-term total cost of ownership SWITCH TO BETTER PERFORMANCE SAE J1939 CAN AND LIN MULTIPLEXED PRODUCTS AND SEALED SWITCHES CKP-SERIES CUSTOMIZABLE KEYPAD * Up to Three LED Indicators per Button * IP69k Sealing Protection (Front Panel) * Diagnostics Feedback VM-SERIES OPERATOR CONTROL MODULE * 12/24 VDC Power Systems * IP68 Sealing Protection * Customizable Functions HR-SERIES ROCKER SWITCH * Rated Up to 20A * IP68 Sealing Protection (Front Panel) * Dynamic Perimeter Lighting learn.carlingtech.com/on-off-highway sales@carlingtech.com SEE US AT NACV ATLANTA GEORGIA OCT 28-31,2019 Booth 7003 TRUCK & OFF-HIGHWAY ENGINEERING Free Info at http://info.hotims.com/73021-708 October 2019 23http://info.hotims.com/73021-708 http://info.hotims.com/73021-708 http://info.hotims.com/73021-708