Volvo Trucks North America unveiled details about new exhaust-gas recirculation technology designed to help its diesel engines meet rigorous 2002 diesel emissions standards.

Starting in the fourth quarter of 2002, Volvo trucks equipped with Volvo diesel engines will use an EGR system called “V-Pulse.” It uses pressure pulses created by the exhaust valves; then re-circulates up to 30% of the exhaust through a cooler and back into the inlet. By using high-pressure, modulating-unit injectors, combustion is clean and efficient, the company added.

Most diesel engine manufacturers are using some form of EGR to meet 2002 rules. Volvo said it has an advantage because it builds both the engine and chassis, and can optimize their designs for weight and efficiency. V-Pulse technology will not add significant weight to the existing Volvo 12-liter engine, and the simplicity of V-Pulse will make the trucks easier to maintain – controlling cost over the life of the vehicle. By avoiding solutions that involve more expensive turbocharger related technologies, V-Pulse can be serviced using minimal changes in maintenance procedures and technical education.

V-Pulse will be supported by the company’s PRISM program that provides drivers, managers and technicians with diagnostic and repair support services that are fully integrated with the electronics of every Volvo truck worldwide.