Thursday, October 20, 2011
Download Technical Information Volvo Engines B5244S4 and B5254T3
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).
