5063-5K90 Engine
6V53TIA Engine for Canadian M113A3 APC
The 5063-5K90 engine is a six-cylinder V6 configuration two-stroke turbocharged, intercooled and aftercooled diesel engine with 53cid (Cubic Inch Displacement) per cylinder, Model 6V53TIA. The engine is equipped with a Detroit Diesel Electronic Control (DDEC) system for engine management. The 6V53TIA engine has a total displacement of 318 cubic inches and can produce up to 400 brake horsepower.
The 6V53TIA engine is used in the Canadian M113A3 Family. The 5063-5K90 engine was developed to provide the required increased power for the upgraded M113A3 family of vehicles developed for Canada by BAE Systems. The two-stroke diesel has a maximum speed of 2850 RPM and a small, light package compared to its maximum torque rating.
- Engine (A3) with Container
- NSN: 2815-20-000-4839 / Part Number: 5063-5K90
- Engine Container
- NSN: 8145-21-921-5640 / Part Number: DL-0189012-1
6V53TIA Engine Features
- High Reliability
- Wide Environmental Tolerance
- Ease of Maintenance
- High-Torque for Physical Size
- Multi-Fuel Capable
- Robust Design
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Turbocharged Intercooled Aftercooled 2-Cycle Diesel
On two-cycle diesel engines, normal aspiration refers to the engine having "neutral" air intake boost pressure. As 2-Stroke diesel engines do not have intake valves, a positive pressure must be generated to push the intake air into the cylinder which is provided by a supercharger, but the supercharger is not considered a pressure boost device as the induction of air into the cylinder causes a neutral average pressure in the intake system.
In turbocharged engine models, one or more turbochargers are used to provide positive boosted intake pressures to increase combustion efficiency and power output.
- Supercharger NSN: 2815-27-059-3812
- Supercharger Part Number: 23516739
In aftercooled engine models, the intake air is cooled after it has been compressed by the turbocharger and supercharger. In the 6V53TIA engine, the aftercooler is a heat exchanger located in the "Vee"" of the Engine that cools the compressed air before it enters the engine intake air box. The heat of the induction air is transferred to the engine coolant system and then to the vehicular cooling system.
In intercooled engine models, the intake air is cooled after it has been compressed by the turbocharger and before entering the supercharger. In the 6V53TIA engine, the intercooler is a heat exhanger located between the turbocharger and the supercharger that cools the compressed air. The heat of the induction air is transferred to the engine coolant system and then to the vehicular cooling system.
DDEC Engine Management System
5063-5K90 engines are equipped with DDEC Electronic Engine Management. The 6V53TIA DDEC system is a microprocessor-based system that monitors and controls the engine's fuel injection, air intake, and exhaust systems. DDEC is a proprietary system developed by Detroit Diesel Corporation. The DDEC system is used to optimize engine performance, reduce emissions, and provide diagnostic information to the vehicle operator.
Lubrication System
The 5063-5K90 engine has a rotary oil pump located within a housing on the front of the engine directly driven by the crankshaft. The georotor pump has 1.5" wide pump gears for higher capacity flow and is driven on a spline on the crankshaft. Gerotor pumps use a trochoidal inner rotor and an outer rotor formed by a circle with intersecting circular arcs. A suction tube and screened pickup suck oil from the oil pan. There are two oil pressure regulating valves in the oil pump housing that regulate the engine oil pressure.
- Oil Pump NSN: 2815-01-219-4102
- Oil Pump Part Number: 5104714
Cold Starting Aid
The 5063-5K90 engine has electronically controlled glow plugs as a cold starting aid below 40F (4C). Power for the glow plug controller is tapped from the starter motor terminals. When the vehicle is switched to Engine Run condition, the glow plug controller is activated. The Glow Plug Controller pulses the glow plugs to heat them whenever the temperature of the engine is cold enough that the glow plugs can assist ignition. When the engine is running and has reached a suitable temperature, the glow plugs are automatically switched off.