- Direct drive chiller
- Electrical power generation
- Gas compression
- Industrial air compression
- Petroleum
The engines incorporate advanced technology that is essential for obtaining these qualities:
- High output
- Low emissions
- High thermal efficiency
Precise control of the engine parameters enable optimum engine performance. The engines are capable of using a variety of fuels in various ambient conditions.
The fuel system of these engines does not use a carburetor. A control valve allows the fuel to enter the gas manifold. The control valve is actuated by an actuator. The fuel pressure in the manifold is regulated by the actuator and the control valve.
Fuel flows from the manifold through an orifice. Some of the gas is routed through an adjustable needle valve and into a precombustion chamber. The fuel in the precombustion chamber is ignited by the spark plug. This provides the ignition for the air/fuel mixture in the cylinder. The rest of the gas is routed through a valve (gas admission valve). The gas admission valve is actuated by the camshaft. This allows fuel to enter the inlet port in the cylinder head. The gas is mixed with air in the cylinder head.
Air for combustion flows from the turbocharger to a choke (air inlet). The air inlet choke is actuated by an actuator. The air travels through the aftercooler to the air plenum and into the cylinder head inlet port. The inlet manifold pressure is controlled by the air inlet choke and the exhaust bypass valve. An electronic control system determines the air pressure that is required to maintain the correct air/fuel ratio. The electronic control system controls the air inlet choke and the exhaust bypass valve.
The electronic control system controls the ignition timing. The control system monitors changes in the load. The control system modifies the timing in response to the change in the load. The timing can also be modified in order to compensate for detonation that is detected.
The engine has two cooling circuits. Water temperature regulators are used in both circuits in order to maintain the correct operating temperatures. Water temperature regulators can be installed in order to regulate the inlet or outlet temperature of the water.
A centrifugal pump (gear type) pulls the jacket water from an external source. The coolant is circulated through the water jacket to the cylinder heads. The coolant flows through water manifolds to the outlet. The coolant flows through a remote water temperature regulator and to a heat exchanger. The coolant is returned to the engine.
For engines with a standard cooling system, the lube oil and the air for combustion are cooled in a separate circuit. A pump pulls the coolant from the heat exchanger. Some of the coolant goes to the oil cooler. Most of the coolant goes to the aftercooler. The coolant returns to the heat exchanger.
The lube oil is supplied by a gear type pump. The temperature of the lube oil is regulated. The oil is filtered before the oil is circulated in the cylinder block.
Engine efficiency and maximum utilization of engine performance depend on the adherence to proper operation and maintenance recommendations. This includes use of the recommended lubricants, fuels, and coolant/antifreezes.
For the engine maintenance that is required, see this Operation and Maintenance Manual, "Maintenance Interval Schedule" (Maintenance Section).