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A cooperative R&D program involving Engine Control Systems Ltd. (ECS) and Consolidated Freightways, Inc. (C-F) has resulted in a diesel emissions control system for small to medium sized mechanical handling equipment. This paper outlines the design specifics of the system with an emphasis on the manner in which forktrucks can relatively easily be retrofitted. Both laboratory and in-field test results are outlined. The particulate filter system uses electric power to induce regeneration when backpressure rises to unacceptable levels.

Much attention has been paid to the emissions from diesel transit coaches culminating in the 1990 EPA bus standard.(1)* A primary pollutant that has been singled out for advanced controls is diesel particulate. In order to meet the low levels of particulate emissions in the standard, diesel particulate filters are one of the principle methods being studied. To this end, the Ministry of Transportation and Communications of Ontario and Engine Control Systems Ltd. entered into a cooperative development program for a low cost, simple and retrofitable diesel particulate control system.(2) The paper outlines the various components of the system and the results of field testing.

In anticipation of hydraulic brake system standards for medium duty trucks requiring dual brake systems and stringent stopping distances, Delco Moraine developed an open-center, hydraulically powered brake booster using the power steering pump as the primary source of power. An electric motor-driven pump is used to provide hydraulic power for the reserve booster system. This Hy-Power brake booster is currently used to actuate a 1-3/4″ diameter high displacement master cylinder. The total system operation plus operation of the hydraulic booster primary, reserve, and manual modes and respective outputs are described in this report.