From the 7 - speed S tronic the propeller shaft runs through
the crankcase of the engine to the front axle, where a viscous coupling distributes the torque.
The cylinder head with integrated air intake manifold and
the crankcase of the new 1.5 - liter diesel are made of lightweight aluminium, while the four valves per cylinder are activated by dual overhead camshafts.
Up to early model year 2004 996 GT3 production, the basic casting used for
the crankcase of the GT3 was the same as the air - cooled engine.
Other high - tech features include variable camshaft adjustment, four - valve technology with bucket - type tappets, a particularly rigid aluminum
crankcase of closed - deck design and the low - friction TWAS coating on the cylinder contact surfaces.
Honda's newly developed CV - Matic is a compact version of its standard V - belt CVT, and for the first time makes it possible to build a V - belt CVT within
the crankcase of a compact motorcycle engine.
The crankcase of the new AMG 5.5 - litre V8 engine features a diecast all - aluminium construction.
Most likely as Handy Howie points out, it could be fuel leaking through the fuel pump into
the crankcase of your engine, raising the apparent amount of oil, but now it would be diluted with fuel.
Here is animation to give you a visual of how water can get into
the crankcase of a two - stroke engine.
Not exact matches
With this commercial grade, DPM targets the market
of flexible thermoplastic - Positive
Crankcase Ventilation (PCV) tubes and Exhaust Gas Recirculation (EGR) sensor tubes.
Otherwise the valving in the
crankcase ventilation system tends to let oil accumulate in the inlet tract, which leads to blue smoke on start - up and a build - up
of carbon around the inlet valves.
The older engines I normally work on have
crankcase ventilation that just ventilates the
crankcase vapours to the open air, so I suppose it's not that
of a concern.
Since piston rings are designed to prevent the contents
of the combustion chamber from making it into the
crankcase (rather than vice versa), oil will begin to leak into the cylinders.
Unless you are speaking
of a failed
crankcase ventilation system, which is a cheap and easy fix.
At this time you should hear air rushing into the
crankcase at the rear
of the engine, this is normal.
The ports run down the outside
of the cylinder wall into the
crankcase which means there is a high probability that there is water in your
crankcase.
It stands for Motor Generator Unit Kinetic, another electric motor positioned on the side
of the
crankcase and directly connected to the crankshaft.
Depending on the type
of engine, once the starter is engaged the volume
of the
crankcase will remain fairly constant, as the volume lost by one piston moving down will be negated by another piston moving up.
Too much oil in the
crankcase can cause piston and conrod damage, ruptured oil seals and all sorts
of of other mischief.
The closed - deck, high - compression flat six features a two - piece
crankcase, direct fuel injection, a pair
of variable - vane turbochargers, more efficient unequal - length tumble - and - roll intake manifolds, and larger intercoolers.
For instance, if one
of the main bearings was spinning in the
crankcase it could take out the
crankcase.
This will only increase the height
of the oil by a millimeter or two in the
crankcase, I do not see how this could increase sound suppression by 10 %.
The valve is located on the side
of the engine block, and serves to vent excess pressure out
of the
crankcase.
Another danger is the
crankcase pressure that's pushing the oil out here may start popping seals and gaskets out
of place resulting in potentially massive oil leaks and much higher repair costs.
I read that when engine oil gets hot the oil flows through the oil cooler and hence I think the oil level in the
crankcase decreases which leads to increasing the harshness
of the engine sound.
This time we are looking at the failure
of the 2.0 t TSI Positive
Crankcase Vent Valve, or PCV.
The pressure is created by the churning and heating
of oil, as well as some
of the combustion gasses escaping past the piston rings into the
crankcase (known as blow - by).
(Don't worry too much, as a little water in the
crankcase does no harm — it's generated all the time as a byproduct
of combustion and normally just boils off when the engine gets hot.)
Use it in the
crankcase with fresh synthetic oil by substituting twenty percent
of the motor oil with MMO, drive at the high RPM, then change oil again after 200 miles.
Peak power is now 490bhp (up 37bhp) while peak torque also increases to 372 lb ft, an increase
of 14 lb ft.. These improvements have come from a new design
of piston crown, improved mechanical efficiency thanks to a reed valve in the
crankcase to evacuate oil and blow - by gasses, reduced backpressure from a redesigned 4 - into - 1 exhaust manifold and a reprogrammed ECU that exploits advances in the anti-knock properties
of the latest petrol formulas.
Not only is the engine 31 pounds leaner than the old supercharged V - 6 — courtesy
of an aluminum
crankcase and pistons — but peak torque is now on tap at 1,370 rpm instead
of 3,000 and the curve stays as flat as Ryan Reynolds» abs until 4,500 rpm.
The main difference between the old and new engines is Audi's adoption
of an aluminium
crankcase, itself the main contributor to a total engine weight reduction
of 26 kg.
Doing it this way, I get a CHEAP FLUSH every time I change the oil, AND I get MOST
of yesterday out
of the
crankcase (I don't think we'll EVER get out ALL old residue).
The bearing covers for the main crankshaft bearings are
of grey cast iron, and are bolted to the
crankcase, as well as on the sides, for high rigidity.
No other petrol engine features direct injection at a pressure
of 200 bar, spray - guided combustion and piezo injectors, all in conjunction with map - controlled cylinder shut - off, an all - aluminium
crankcase with «spectacle» honing, four - valve technology with continuous camshaft adjustment, a high compression ratio
of 12.6: 1, a start / stop system and generator management — while revving to a maximum speed
of over 7000 rpm.
The lower
crankcase was completely redesigned to help reduce the car's centre
of gravity (the engine sits 30 mm lower and further back in the chassis compared to the 599 GTB Fiorano).
There's a closed - deck
crankcase, a magnesium oil pan and a forged - steel crankshaft, with the engine's oil circuit designed to cope with sustained loads
of more than 1.2 g in any direction.
The block uses an open - deck
crankcase with crossflow head cooling channels that reduce the resistance to coolant flow, allowing the use
of a smaller water pump.
Drive - E also emphasises a reduction
of internal friction, including a redesigned and very rigid
crankcase frame, and roller bearings for the twin overhead camshafts.
The new engine also feels more eager across the final 2000rpm, where Preuninger says the added rigidity
of the
crankcase and other stiffening measures made to the block come into play.
It features a number
of new developments, including friction - reducing plasma - based cylinder liners, a stiffer
crankcase, redesigned cam followers within the rocker bearings and a revised scavenging system for the dry sump that is claimed to reduce oil recirculation by more than 40 %.
The new unit has an aluminium
crankcase and cylinder head, and the refinement that is likewise a hallmark
of BMW six - cylinder in - line engines has been elevated to another level still thanks to new, near - source acoustic shielding.
The highlights
of this long - stroke engine with an aluminum
crankcase include dry sump lubrication and a cylinder angle
of 90 degrees.
The long - stroke engine (bore x stroke 84.5 x 92.8 millimeters [3.33 x 3.65 in]-RRB-, which is hand - built at the factory in Györ, Hungary, features a
crankcase made
of a aluminum - silicon alloy that is both lightweight and very strong.
But thanks to a modified turbocharger, which has higher maximum charge pressure and a reinforced
crankcase, output is upped by 100 hp and 51 lb - ft
of torque to 395 hp (equating to 400 PS, hence its name) and 332 lb - ft.
Equipped with High Precision Direct Injection and Valvetronic fully variable valve control, the 3.0 - liter engine with aluminum
crankcase develops maximum output
of 300 hp between 5,800 and 6,000 rpm.
Its
crankcase is made
of vermicular graphite cast iron, an extremely strong, yet lightweight material.
It's a four - valve 2.0 - liter turbocharged four - cylinder that packs four multilink mechanisms inside its
crankcase with three times the typical number
of bearings, capable
of providing any desired compression ratio between 8.0:1 and 14.0:1.
One
of the benefits
of the flat - plane crank is that it improves windage and oil control in the engine's
crankcase.
Another factor contributing to the vehicle's smooth running characteristics is the high rigidity
of the
crankcase.
The four - cylinder engine
of the new BMW 118i, which has an all - aluminium
crankcase, has a maximum output
of 125 kW at 4,800 rpm, and a maximum torque
of 250 Nm between 1,500 and 4,500 rpm.