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Crankshaft, Main Bearings Stroke 90.0 mm; forged; weight 21571 grams; connecting rod pins: Main bearing journals:
Both the upper and lower main bearings are aluminum. Connecting Rods, Connecting Rod Bearings • Center to center length 143 mm; weight 644 grams. Both the upper and lower bearings are aluminum.Pistons Graphite-coated pistons.
Wrist pin diameter/length = 21 mm/57 mm. Weight 397 grams with piston rings, snap rings and wrist pins. Weight piston alone 282 grams. ON-DEMAND FUEL PUMP The pump unit supplies the engine with only the amount of fuel being consumed at the time. The flow from the pump unit is the same as fuel consumption. Naturally Aspirated Engine On a naturally aspirated engine, pressure is limited to 400 kPa (corresponds to 380 kPa at the fuel rail). Turbocharged Engines The PVV is closed under normal driving conditions and only opens when there is a pressure surge in the fuel rail (approximately 560 kPa). Examples of when pressure surges occur are when engine braking and when the engine is switched off due to power loss.
Tags : connecting rod bearings, aluminum pistons, main bearings, volvo engines, pin diameter, piston rings, wrist pins, aluminum connecting rods, fuel consumption, fuel rail, wrist pin, engine braking, pvv, kpa, driving conditions
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