A
crankcase is a protective housing in an engine where the crankshaft is located. It keeps the crankshaft and other important components protected and lubricated with oil to ensure smooth and efficient operation of the engine.
Full definition
Two petrol engines with Twin Turbo technology and High Precision Injection - the 300 kW / 407 hp V8 in the top - of - the - range BMW 750i and the 240 kW / 326 hp straight - six in the new BMW 740i - as well as a newly developed straight - six diesel with common - rail fuel injection, piezo - injectors and an
aluminium crankcase with maximum output of 180 kW / 245 hp in the new BMW 730d are available right from the start upon the introduction of the car.
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.
It certainly helps that the engine itself is configured with a specially cast
aluminum crankcase with reinforced bed plate and Bi-Turbo capable flanges that allows Alpina to mount the biturbos for use with the engine without having to do too much work in reconfiguring the entire layout under the car's hood.
If the pickup is uncovered, it will attempt to suck
in crankcase air rather than straight oil.
The engine features an aluminium
crankcase with thermally - joined cylinder liners (to reduce internal friction) and integrated balancer shafts, a turbocharger with variable intake geometry as well as an improved 2,000 bar common - rail direct - injection system.
New domed rocker covers house a patent - pending integrated
positive crankcase ventilation system that enhances oil life, reduces oil consumption and reduces exhaust emissions.
Single arm with
engine crankcase as swinging element, served by a single dual chamber shock with 4 - setting adjustable spring preload.
Technical Data: 6 cylinder in - line engine, cast iron cylinder block; bore x stroke 3 1/2 x 4 1/2 in, capacity 4,257 cc; aluminium
alloy crankcase; cast iron cross-flow cylinder head; overhead valves, single coil ignition, stand - by coil; single dry plate type clutch; 4 speed gearbox in unit with engine; hypoid bevel final drive; independent front suspension with coil springs, semi-elliptic rear springs; 4 - wheel brakes servo - assisted, wheelbase 3,454.4 mm (136 in), tyre size 6.50 x 17
Design features of the B and RB engines include 17 capscrews per cylinder head, a cylinder block that extends 3 in (76 mm) below the crankshaft centerline, an intake manifold not exposed to
crankcase oil on the underside, stamped - steel shaft - mounted rocker arms (race versions used forged steel rockers), and a front - mounted external oil pump driven by the camshaft.
The fuel savings are gained from use of fuel - efficient direct - injection technology, and engineers cut 8 pounds off the overall engine weight via a thinwall
crankcase casting, exhaust headers that are integrated into the cylinder head and changes to the bearings.
As can be expected, this high - performance version of New Giulietta comes exclusively with the powerful 1750 Turbo Petrol with direct injection and aluminium
crankcase which delivers 240 HP at 5750 rpm.
This technology package improves throttle response and revving ability as well as refinement and efficiency, while an aluminum
crankcase also optimizes weight.
Its latest - generation 3.0 - litre straight - six diesel comes with an all - aluminium
crankcase as well as common - rail direct fuel injection with piezo - injectors, delivers 180 kW at 4,000 rpm, and gives the car average fuel consumption in the combined EU cycle of just 6.5 litres / 100 kilometres, as well as a CO2 emission rating of just 173 grams per kilometer.
The closed -
deck crankcase utilizes cylinder decks with no bulkheads to build higher pressure within the cylinder, maximizing power output.
Although the engine is based on the 2.5 - litre AR four - cylinder unit, Ogawa said a
new crankcase aided low noise, vibration and harshness levels, as do contra - rotating balance shafts.
There used also to be a time when, to increase power, the two stroke transfer of mix from
lower crankcase overlapped the exhaust port being opened.
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.
Its aluminum
crankcase features integrated, thin - walled cylinder liners of gray cast iron.
To accommodate the higher output, the EA888's familiar, highly compact thin - wall
cylinder crankcase is here made of a high - strength cast alloy.
The long - stroke engine with its aluminum
crankcase breathes freely; flaps in the exhaust tailpipes vary the sonorous acoustic backdrop.
If the problem still occurs you can also check
crankcase gases ventilation valve.
Modified cam timing, more boost, a
stiffer crankcase, and a new exhaust system help to hike power and torque over the SL55's already useful 493 hp and 516 lb - ft.
The highlights of this long - stroke engine with an aluminum
crankcase include dry sump lubrication and a cylinder angle of 90 degrees.
Engines used to simply
develop crankcase pressure and push some amount of oil past the seals of the engine.
For mass reduction the midsize gasoline engine features a two -
piece crankcase design, supported at the lower end by a die - cast aluminum bedplate.
This time we are looking at the failure of the 2.0 t TSI Positive
Crankcase Vent Valve, or PCV.
The Beetle engine seems impossibly exotic for its time, an air - cooled, 1131 - cc flat four with a
magnesium crankcase, cast - iron cylinder liners, and cast - aluminum pistons and cylinder heads, not to mention a dedicated oil cooler.
Distinguishing features versus the M157 include the new intake air ducting, new cylinder heads, the modified valve drive, an adapted oil supply system and an
optimised crankcase.
The 5.2 - litre V10 with an aluminium
crankcase draws its fuel from an FSI direct injection system.
Standout features included a
split crankcase, similar to the 962 racer, but with two water - cooled heads (one head per trio of cylinders), similar to the 959 supercar.
The new three - liter V6 gasoline unit with its aluminum
crankcase weights just 172 kilograms (379.2 lb).
Durable, Long Life Engine Design The RANGER Diesel Kohler engine has a compact, heavy - duty design with a cast
iron crankcase for durability and an aluminum cylinder head for weight reduction.
In this case, the deterioration of
crankcase emissions must also be accounted for in exhaust deterioration factors.
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.
Lightweight components include magnesium valve covers, aluminum
crankcase sections, Silitec cylinder liners and lightweight hollow - bore camshafts with indexed, pressure - fit steel lobes.
Unless you are speaking of a
failed crankcase ventilation system, which is a cheap and easy fix.
In can go into the
main crankcase, in which case your engine oil will show the effects of coolant and oil mixing.
In addition to the increased displacement (via a longer stroke), the Superfast's engine features a new crankshaft, new con rods, a new piston design, and a more
robust crankcase.
I might buy the throttle plate and ACV being my issue, but not going for the internal carbon buildup or
dirty crankcase... That's a stretch that I can't see a connection to.
However, 2 -
stroke crankcase scavenged engines connect the gas ports directly to the cylinder wall without poppet valves; the piston controls their opening and occlusion instead.
Built by AMG's specialist engineers in Affalterbach, the turbocharged engine found under the bonnet features an aluminium crankshaft, forged alloy
steel crankcase and new stop / start technology.