Volvo Trucks North America
Volvo Trucks North America has announced the availability of the 465 hp Volvo VE D12 diesel engine for the new Volvo VN.

The VE 465 does not require exhaust aftertreatment to meet the new EPA’02 emissions regulations. The engine utilizes Volvo’s V-Pulse technology use the normal pressure pulsation in the exhaust manifold to achieve the level of exhaust gas recirculation (EGR) needed for emissions reductions. A significant mass of exhaust escapes the combustion chamber just as the exhaust valve opens, similar to the pressure release when a can of soda is opened. Pulses from each cylinder are captured and fed through a twin-path EGR cooler to provide the gas needed for recirculation. The recirculation lowers the oxygen content of the intake charge, and holds down the formation of oxides of nitrogen (NOx). This method of EGR allows the turbocharger boost pressure to remain higher than the exhaust manifold back pressure, achieving a ‘positive pumping loop,’ which provides better fuel economy, without compromising horsepower, the company says.

Volvo says the engine actually has an improved horsepower curve, compared to Volvo’s previous 465-hp rating. Although it has the same peak torque of 1650 lb-ft as previously, the new VE 465 has a flatter power output curve, which means drivers can access peak power throughout more of the engine’s range. This improves driveability, while at the same time allowing “gear fast, run slow” gear selection for improved fuel economy . Horsepower is maintained at 465 HP from 1500 rpm through 1825 rpm.

Like other Volvo Power ratings, the VE 465 offers several features, including exhaust pressure governor, oil level indicator, and live PTO (power takeoff) port on the side of the engine. The exhaust pressure governor allows idling in cold climates, if necessary, at only 650 rpm, which saves 0.5 gallons of fuel per hour over competitive engines, the company says. The electronic oil level indicator provides a way to check the oil level without leaving the cab.