Volvo Penta’s 16-L diesel for mobile and stationary applications

  • 19-Jun-2008 08:29 EDT
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Volvo Penta’s TAD1650VE industrial diesel features a cast-iron cylinder block and wet, replaceable cylinder liners. It is also equipped with piston cooling for low thermal load on pistons and reduced ring temperatures.

The TAD1650VE diesel engine from Volvo Penta is based on the company’s 9- and 12-L engines. The engine features Volvo Advanced Combustion Technology (V-ACT), which includes a flexible high-pressure fuel-injection system, an air management system with internal exhaust gas recirculation (EGR), and an enhanced electronic controller.

Volvo’s electronic system (EMS2) has been further upgraded for this engine with increased processing power. Together with improvements in air and fuel management this gives fast response to throttle opening but with very low transient smoke, meeting the overall U.S EPA/CARB Tier 3 and EU Stage 3 off-highway emissions regulations. The EMS2 also includes facilities for diagnostics and fault tracing.

Instruments and controls connect to the engine via a CAN SAE J1939 interface, either through a control interface unit (CIU) or a digital control unit (DCU). According to Volvo, the CIU converts the digital CAN bus signal to an analog signal, allowing connection to a variety of instruments. The DCU is a control panel with display, engine control, monitoring, alarm, parameter setting, and diagnostic functions. Volvo also says that the DCU presents error codes in clear text.

In the internal EGR device, an electrohydraulic control system regulates valve actuation to allow a small amount of exhaust gas to be fed back into the cylinder, lowering peak temperatures and reducing the formation of NOx.

Fuel quality can sometimes prove harmful on certain emissions-certified engines. Volvo says that despite being designed to meet EU and U.S. emission standards, the TAD1650VE is manufactured with a worldwide specification and is designed to operate using all commercially available fuel qualities.

The engine is a direct-injected, four-stroke, turbocharged, charge-air-cooled diesel with mechanically actuated, electronically controlled unit injectors. It has a rear timing geartrain, giving it a shorter length and improved noise characteristics. Tapered connecting rods reduce the risk of piston cracking.

The TAD1650VE produces 397 kW (532 hp) at 1800 rpm with a virtually flat torque curve of 2500 N·m (1844 lb·ft) from 950 to 1500 rpm and peaking at 2551 N·m (1882 lb·ft) at 1400 rpm.

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