Developed from the K38 and K50 engines ,longer stroke to provide additional horse power
,electronic fuel control,uses edge molded gaskets for improved sealing,
The QSK 45 and 60 engines have internal and external hardware improvements over their predecessors.
In addition to the other changes, the QUANTUM engine control system is used on QSK 45 and 60 engines. This electronic control system is designed to optimize engine control and reduce exhaust emissions.
This system has the flexibility to provide precise control in a variety of off-highway equipment applications.
The QSK 45 and 60 engine control system is a full-authority electronically operated fuel control system that also provides over 80 operator and vehicle or equipment features.
The primary functions of the control system include fueling and timing control, limiting the engine speed operating range between the low and high idle set points, and reducing exhaust emissions while optimizing engine performance.
QSK 45 and 60 engines used in gen-set and generator drive applications utilize a different control system from the one used on other applications.
The QUANTUM fuel control system offers infinitely variable timing through the ECM’s ability to control the pressure in the timing rail through the use of the timing actuator.
Other benefits of the electronic control system include:
Improved fuel economy
Diagnostics
Improved emissions and …
Increased engine durability
The components of the system can be categorized as input, processing, or output devices.
Inputs are electrical devices, typically sensors and switches, that provide signals used to determine operating conditions or desired operation.
Processing is performed by the engine ECM.
The ECM then supplies output signals to the various output devices.
With the previous K Series engines, many parts were interchangeable between the vee and inline configurations.
However, the QSK 45 and 60 engines have fewer interchangeable parts with their companion six cylinder inline engine, the QSK19.
The stroke of each of these engines has been increased over the K38 and K50 engines, to produce added horsepower.
The QSK 45 utilizes two turbochargers, mounted near the center of the engine.
Some QSK 60 engines utilize four turbochargers to supply the intake air to the engine.
Some of the higher horsepower QSK 60 engines utilize a two-stage turbocharger system.
The capscrews used on the QSK 45 and 60 engines have a tapered flanged head design. This taper helps to hold the capscrews in position without the use of lockwashers.
The overall engine blocks are 6.2 mm longer than the K38 and K50 engines. All threaded ports are designed for metric straight thread o-ring fittings.
The QSK 45 and 60 cylinder liner is a top counterbore lower press fit design utilizing a brass sealing ring, two D-ring seals and a lower crevice seal.The articulated pistons consist of a steel crown and an aluminum skirt. The piston pin bore diameter has increased. The connecting rod is a split angle design to improve accessibility. The piston pin is now hollow for reduced weight.
The crankshaft incorporates a larger crankshaft nose that is the same diameter as the flywheel flange.
The crankshaft utilizes a wider crankshaft gear.
The crankshaft counterweights bolt on the crankshaft.
The thrust bearings on the QSK 60 install on the number 8 main bearing cap. For the QSK 45, the thrust bearings install on the number 6 main bearing cap.
The main caps are positioned in the block by dowel rings. The caps attach to the engine block using two capscrews through the cap and then into the block and also by two capscrews that come through the side of the block and into the cap.
QSK 45 and 60 engines utilize two targeted piston cooling nozzles per cylinder.
A block stiffener plate mounts to the bottom of the block. This plate improves the overall strength of the block and reduces engine noise.
The camshaft journals are over 105 mm in diameter.
The camshaft for each bank is larger to withstand the increased injection pressure for QSK 45 and 60 engines.
The front gear housing is deeper to accommodate the wider front gear train.
Individual head gaskets for each cylinder are a steel plate design utilizing edge molded seals around the oil passages, coolant passages, and the capscrew holes.
The new cylinder heads are taller to accommodate the QUANTUM fuel system.
The fuel injectors are a QUANTUM style open nozzle design.
The push rods used on QSK 45 and 60 engines are longer to allow for the increase in height of the cylinder head.
The gear pump design fuel pump provides approximately three times the fuel flow as the pump used on KV engines.
The Electronic Fuel Control Valve Assembly, or ECVA, attaches to the side of the engine block. This assembly contains fuel passages, sensors, a shutoff valve, and actuators to control the flow of timing and metering fuel to the engine.
The Venturi combo oil filter offers improved performance, long life, and low pressure drop across the filter.
The filter contains a 95% efficient 30 micron StrataPore full flow element and a 10 micron bypass element.
The new filter has a thicker can, stronger center tube and decreased mounting thread size.
The Eliminator is an automatic, self cleaning filter. The permanent filter media lasts for the life of the engine and does not require service until engine overhaul.
This service is performed at intervals up to 2,500 hours.
The ConeStaC centrifuge bypass filter is used with the standard spin-on filter arrangement and provides additional bypass filtration.
Oil is supplied to the ConeStaC bypass filter from the main oil rifle and returned to a fitting in one of the hand hole covers.
