Originally posted by abuzz97 at 2006-4-13 12:53:
這真是個好問題..
找遍了關於 Volvo S40 5缸 Turbo
這款引擎的相關討論
都沒有找到點火順序的說明..
需要找個時間好好搜尋一下...
Crankshaft, Main Bearings
Stroke 93.2 mm; forged; weight 21606 grams; connecting rod pins: 50.00 mm; main bearing journals:
The crankshaft is somewhat heavier than on the 2.5 LT, B5254T2 (21559g) due to the different
balancing for pendulum suspension motor mounts.
Both the upper and lower main bearings are aluminum.
Connecting Rods, Connecting Rod Bearings
Bigger connecting rods, forged using split caps. Center to center length 143 mm; weight 644 grams.
Both the upper and lower bearings are copper-lead alloy.
Pistons
Graphite-coated pistons
Wrist pin diameter/length = 21 mm/60 mm
Weight 412 grams with piston rings, snap rings and wrist pin
Piston weight alone 290 grams.
Graphite-coated pistons have a play of approximately 0.04 mm between the piston and cylinder before
the graphite coating. The graphite coating is approximately 0.01 mm on either side of the piston. The
graphite coating wears but never completely disappears as it penetrates the outer layer of the piston.
Cylinder head, camshafts
Cooling is more effective due to larger coolant ducts and a more directed flow between the exhaust
ports and around the spark plug wells.
Multi Layer Steel (MLS) gasket for the cylinder head.
Cylinder head with CVVT on the intake and exhaust camshafts.
Change over angle CVVT:
- Intake = 50 crankshaft degrees
- Exhaust = 30 crankshaft degrees
The engine mounting bracket is located on the cylinder head and secured with 5 bolts that must be
tightened in three stages. See VADIS.
Oil Filter / Oil Trap
The filter and trap are integrated into one unit.
The filter has been moved from the oil pan to the intake side of the engine. This causes less oil spillage
when replacing the filter than on previous engines.
The filter and cover are the same as those used on Volvo's own diesel engine (D5244T/T2).
Oil flows from the outside in through the filter.
To ensure that oil flows even if the filter is clogged, there is an overflow valve in the cover that opens at
11kPa and when starting the vehicle from cold (-20°C to -25°C).
Oil Separation
The same as in B524454. In addition, in the turbocharged engines the gases go from the diaphragm to
a T-coupling and from there, either to reed valves in the intake gasket or to the turbocharger, depending
on engine load and engine speed.
Spark Plugs
To reduce carbon deposits when starting the vehicle from cold, the ceramic is thinner at the tip of the
spark plug. This is called Quick Heat.
The spark plugs have a longer thread = 26.5 mm (previously 19.0 mm).
The spark plug has one electrode.
The diameter of the center electrode is now 1.1 mm (previously 0.8 mm).
The tightening torque is 28 N •m (+ l- 3 N•m).
M E 9.0
Bosch ME 9.0 Engine Management System
The engine now has a newly developed ME 9.0 engine management system from Bosch.
Bosch engine management system ME 7.01 had to be updated to the ME 9.0 for the S40/V50.
The control module has been moved from the control unit box to the intake manifold. This is mainly due
to increased requirements for the control module's environment (temperature, vibration, water tightness
etc.).
At the same time the processor has been replaced with a more powerful version with more memory.
The processor load for the ME 9.0 is approximately 80-85%, this figure would have been higher in the
ME 7.01 and left too small a margin.
- The ME 9.0 also has 1.5 MB of flash memory (2MB available).
The ME 7.01 only has 1 MB of memory.
- The ME 9.0 has a higher maximum temperature specification (105°C vs. 85°C).
- The ME 9.0 has more robust vibration specifications than the ME 7.0.1 due to its changed location.
TURBO
The exhaust manifold is integrated with the turbine housing.
Maximum charge pressure is 0.7 bar.
The oil pipe is routed differently and has a flat flanged connection to the turbocharger.
The Turbo Control Valve (TCV) is mounted in a bracket to the right of the turbocharger.
The exhaust manifold has a MLS (Multi Layer Steel) gasket. Two slits have been machined into the
manifold to deal with heat expansion.
The turbocharger has been matched and designed by Volvo together with the sub-contractor
3k-Warner Turbo Systems from Germany.
The catalytic converter under the floor, UFC (Under Floor Catalyst), has double oval ceramic monoliths.
The flow through the catalytic converter is optimized to reduce resistance.
Exhaust Pipe
•The exhaust system has been developed to further reduce wind resistance under the car.
60 mm) and a tail pipe on each side of the muffler.
52 mm) have been designed to allow for effective gas flow and to be visible. A
65 mm end pipe gives the tail pipe a more visible impact.
I ntercooler
•The Intercooler is rectangular and is located in front of the radiator assembly, just behind the air
intake in the spoiler (similar to S60R second Intercooler).
Charge Air Pipe
The charge air pipe runs under the engine and is mounted on the turbocharger with a V-clamp.
Intake
•The intake has short pipes and a double gasket with built-in non-return valves (reed-type) for
crankcase ventilation.
ETB
•The electronic throttle body is the same as the B5254T2, the only difference is, it has a shortened
hose connector.
Auxiliary Equipment
•The design of the auxiliary equipment has been changed to make the engine shorter.
•The A/C compressor and alternator have their own drive belts. The alternator now rotates
clockwise.
•The drive belts are in reinforced rubber (Poly-V), and are tensioned by their own mechanical
tensioners.
Thermostat Housing
The thermostat housing has been moved to the block on the intake side of the engine.
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.
The pump unit flow is:
- approximately 90 I/h at 400 kPa (corresponds to 380 kPa at the fuel rail) for naturally aspirated
engines and 115 I/h for turbocharged engines at full load.
- At idle speed flow is approximately 1.2 I/h to 2.0 I/h.
Power consumption varies from approximately 8 A at full capacity to approximately 2 A when the engine is idling.
Pressure Ventilation Valve (PVV)
The PVV works differently for naturally aspirated engines than turbocharged engines.
Naturally Aspirated Engine
On a naturally aspirated engine, pressure is limited to 400 kPa (corresponds to 380 kPa at the fuel rail).
The valve limits pressure surges occurring when the fuel injection is interrupted.
Pressure limitation is achieved by 'leaking' fuel through the valve. The fuel surplus runs into the
reservoir at approximately 34 I/h (applies only to naturally aspirated engines). The leakage also helps
to flush the valve free of particles.
When the engine is switched off, the valve maintains a residual pressure in the fuel injection system to
help prevent restarting problems.
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.
The ECM raises the pressure in the system so the PVV opens (approximately 600 kPa). This flushes
the valve free of particles.
Pressure Relief Valve (PRV) Applies Only to B5244S4
The safety valve is integrated into the fuel pump. The valve opens in the range 550 kPa - 850 kPa.
First Filling Valve (FFV)
Allows fuel into the pump reservoir when the fuel tank is filled after it has been almost emptied.
The valve is closed when the car is tilted so that there is still fuel in the reservoir around the pump.
Check Valve
The valve closes when the pressure in the pump is lower than system pressure - when the engine and
power to the pump is switched off. This is to prevent the fuel line to the engine being drained of fuel.
The valve is integrated into the fuel pump.
Ejector Continuously fills the pump housing with fuel.
Approximately 10-15 I/h is always flowing from the fuel pump through the ejector and back to the reservoir.
Fuel Filter
The fuel filter is located in the reservoir and is integral with the pump/pickup assembly.
看看喔~~如果還要有後續的
