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Technical Innovations
Dana EPIC electronic management for industrial engines
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Dana EPIC's CEMS consists of (clockwise from right) throttle-body assembly with idle-speed control valve, optional OE-Tune valve, and an electronic control unit.
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Dana Corp.'s EPIC Technical Group has developed a new electronic engine control system for engines running on liquefied petroleum gas (LPG). This new system, called the Carburetted Engine Management System (CEMS), will be supplied to NACCO Materials Handling Group, Inc. for use on two new lift trucks. The Hyster H70-120XM and Yale GP070-120LJ/MJ, 3.6-4.5 t (4-5 ton) pneumatic-tire lift trucks make use of the CEMS to integrate an electronic control unit, throttle body assembly, and airhorn/LPG adapter assembly. The system also provides the option of including a closed-loop LP fuel control mechanism, which NACCO will use on some of the new models.
When used with the optional OE-Tune valve, CEMS can lower exhaust emissions while maintaining performance and driveability. The CEMS/OE-Tune valve combination makes the lift trucks capable of meeting the California Air Resources Board proposed 2001-2003 emissions standards for off-road large spark-ignition engines.
CEMS is said to feature highly accurate and responsive electronic engine speed governing, as well as digital ignition control. Electronic idle load-speed control helps prevent the engine from stalling under heavy loads. Though designed for the industrial forklift market, CEMS can be applied to a variety of industrial LPG powered engines.
For Hyster and Yale gasoline-powered electronic-fuel-injected lift trucks, EPIC will supply other components including the throttle body assembly, throttle body injection module, and airhorn/adapter assembly.
For more information from Dana EPIC, circle 421.
SAE Off-Highway Engineering April 2000
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