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المشاركة الأصلية كتبت بواسطة mhamdy75 (المشاركة 717295)

12 سلندر MADDRIVE

ليييييييييييييييييييييييي ييه

12 سلندر
http://forums.bimmerclassics.com/att...upe-engine.jpg

http://www.taylorpatterson.com/BMW85...plodedview.jpg

5600CC-5.6Litre version was also fitted to the '95 – '97 BMW
850CSi

http://www.motaz.co.uk/Images/E31-06.jpg

شاهد الثبات والرصانة

http://www.youtube.com/watch?v=4sHCS5OmbZI

http://www.youtube.com/watch?v=zZ_55ITGf2I

دوبل تيربو
http://www.youtube.com/watch?v=cc80tfQvvSc

The current CL 600, SL 600, CL 65 AMG and S 65 AMG still use the 12cylinder

http://benzinsider.com/wp-content/up...v12_engine.jpg

http://www.youtube.com/watch?v=wvL-nT1UhzE

http://www.youtube.com/watch?v=DwHvL6FUAlo

http://www.youtube.com/watch?v=Zh4G3GqIP_U

w 16 engine

the 16cylinder

http://en.last-video.com/wp-content/...gatti-W161.jpg
http://lh6.ggpht.com/_8MPCKJQzPA8/Sy...ine%5B2%5D.jpg
We need a 16-liter engine to burn 1.33 gallons of gas per minute. That actually makes sense — the engine in the Dodge Viper is 8.0 liters in displacement and produces 500 hp.
But there’s a problem: A 16-liter V-8 engine would be very large. And the pistons would be massive, so there would be no way it could turn at 6,000 rotations per minute (rpm). It might turn at a maximum of 2,000 rpm, meaning that you would need an immense 48-liter engine to generate 1,000 hp. Clearly an engine that big is impossible in a passenger car.
So howdid Bugatti fit 1,000 horsepower into a passenger car?
http://static.howstuffworks.com/gif/bugatti-15.jpg
Bugatti did two things to create a compact engine capable of producing 1,000 hp.
The first and most obvious thing is turbocharging.
The Bugatti Veyron’s 16-cylinder monster engine produces 1,001 horsepower for a top speed of more than 250 mph. And it’s a passenger car. Check out the Bugatti. Amazing isn`t it?
VR6
http://images.europeancarweb.com/fea...sat04_zoom.jpg

Engines - Volkswagen W8

You know of the W12 in the Bentley and big Audis, and the W16 in the Bugatti Veyron but what about their smaller cousin on the Passat W8? According to some, "the most expensive engine ever put on a Volkswagen passenger ****. A block with staggered cylinders connected to a flat-plane crankshaft, all of it shoehorned into an engine bay that was never meant to receive it.

The four piece aluminum manifold is a beautiful thing in this age and age where most are made of plastic. It is really the only thing you can appreciate from the top side. Getting to the spark plugs is easy. Replacing the Oxygen sensors and working on auxiliaries - "a challenge" to say the least. Still, it really elevates the Passat platform to a whole other level (when everything is working well).

<TABLE style="TEXT-ALIGN: center; MARGIN-LEFT: auto; MARGIN-RIGHT: auto" class=tr-caption-container cellSpacing=0 cellPadding=0 align=center><TBODY><TR>< TD style="TEXT-ALIGN: center">http://3.bp.blogspot.com/-z9wv26AV6F...gine-01-sm.jpg</TD></TR><TR><TD style="TEXT-ALIGN: center" class=tr-caption>The one sitting in my car is still humming after 150,000 miles.</TD></TR></TBODY></TABLE>
<TABLE style="TEXT-ALIGN: center; MARGIN-LEFT: auto; MARGIN-RIGHT: auto" class=tr-caption-container cellSpacing=0 cellPadding=0 align=center><TBODY><TR>< TD style="TEXT-ALIGN: center">http://2.bp.blogspot.com/-6AXDV3YYG-...away-01-sm.jpg</TD></TR><TR><TD style="TEXT-ALIGN: center" class=tr-caption>The piston arrangement and twin balance shafts are clearly visible in this diagram (Source)</TD></TR></TBODY></TABLE>
<TABLE style="TEXT-ALIGN: center; MARGIN-LEFT: auto; MARGIN-RIGHT: auto" class=tr-caption-container cellSpacing=0 cellPadding=0 align=center><TBODY><TR>< TD style="TEXT-ALIGN: center">http://1.bp.blogspot.com/-BqYIu7r2n4...gine-Block.jpg</TD></TR><TR><TD style="TEXT-ALIGN: center" class=tr-caption>Unusual cylinder arrangement makes for a short block of relatively square footprint.</TD></TR></TBODY></TABLE>
<TABLE style="TEXT-ALIGN: center; MARGIN-LEFT: auto; MARGIN-RIGHT: auto" class=tr-caption-container cellSpacing=0 cellPadding=0 align=center><TBODY><TR>< TD style="TEXT-ALIGN: center">http://4.bp.blogspot.com/-2vH-gWI3hf...-Chains-01.jpg</TD></TR><TR><TD style="TEXT-ALIGN: center" class=tr-caption>The timing chain system and adjustable camshaft system. A duplex to the relay and simplex to the camshafts. I am still wondering how long those plastic guides will last. (Source)</TD></TR></TBODY></TABLE><TABLE style="TEXT-ALIGN: center; MARGIN-LEFT: auto; MARGIN-RIGHT: auto" class=tr-caption-container cellSpacing=0 cellPadding=0 align=center><TBODY><TR>< TD style="TEXT-ALIGN: center">http://4.bp.blogspot.com/-QYcopcJSZj...od-Removed.jpg</TD></TR><TR><TD style="TEXT-ALIGN: center" class=tr-caption>With the intake manifold removed, coil packs, fuel rails and that ridiculously expensive thermostat are clearly visible (Source).</TD></TR></TBODY></TABLE>
<TABLE style="TEXT-ALIGN: center; MARGIN-LEFT: auto; MARGIN-RIGHT: auto" class=tr-caption-container cellSpacing=0 cellPadding=0 align=center><TBODY><TR>< TD style="TEXT-ALIGN: center">http://3.bp.blogspot.com/-JT6NDyAn3v...and-Valves.jpg</TD></TR><TR><TD style="TEXT-ALIGN: center" class=tr-caption>Cylinder head (bank 1) showing valves, coolant, and oil passages (Source).</TD></TR></TBODY></TABLE>
<TABLE style="TEXT-ALIGN: center; MARGIN-LEFT: auto; MARGIN-RIGHT: auto" class=tr-caption-container cellSpacing=0 cellPadding=0 align=center><TBODY><TR>< TD style="TEXT-ALIGN: center">http://3.bp.blogspot.com/-wusxi2mUKO...nd-pistons.jpg</TD></TR><TR><TD style="TEXT-ALIGN: center" class=tr-caption>Engine block (bank 1) showing pistons coolant and oil passages (Source).</TD></TR></TBODY></TABLE>
<TABLE style="TEXT-ALIGN: center; MARGIN-LEFT: auto; MARGIN-RIGHT: auto" class=tr-caption-container cellSpacing=0 cellPadding=0 align=center><TBODY><TR>< TD style="TEXT-ALIGN: center">http://2.bp.blogspot.com/-gkfKdiLY-x...haft-01-sm.jpg</TD></TR><TR><TD style="TEXT-ALIGN: center" class=tr-caption>Very tight tolerances going on on that crankshaft! (More photos of engine internals at the W8 forum)</TD></TR></TBODY></TABLE>
<TABLE style="TEXT-ALIGN: center; MARGIN-LEFT: auto; MARGIN-RIGHT: auto" class=tr-caption-container cellSpacing=0 cellPadding=0 align=center><TBODY><TR>< TD style="TEXT-ALIGN: center">http://1.bp.blogspot.com/-GgA2ku6Sid...il-Pump-01.jpg</TD></TR><TR><TD style="TEXT-ALIGN: center" class=tr-caption>A good view of the lower crankcase displaying the oil pump (Source).</TD></TR></TBODY></TABLE>

http://4.bp.blogspot.com/-GE7N97cJEQ...-FrontView.JPG

Front view showing the inner and outer banks of pistons, long intake runners, the location of the twin balance shafts, and the shallow but very wide crankcase. Hard to believe that it holds up to 9.0 quarts of oil in there!

http://2.bp.blogspot.com/-q_B8l5GbkR...ideView-01.jpg

The short crankshaft is very apparent in this side view. A significant amount of space is dedicated to both the oil pump drive chain and timing chain system.

http://4.bp.blogspot.com/-HymG5eu3tE...r-Curve-01.jpg

Advertised power curves show a pretty flat peak between 2750 and 5000 RPM. An area where this car pulls like a train at higher freeway speeds. (Source for all diagrams: VW Self Study Program 248 - The W Engine :THUMBS~220:

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Recent Trends in the Development of Engines-Ilmor Five Stroke
Enginesمحرك 3 سلندر خماسى الاشواط !!!!!!
http://www.royalauto.in/wp-content/u.../Internals.jpg
Our objective with the 5-stroke engine is to develop a gasoline engine with fuel consumption and emission levels comparable to that of current diesel engines, without the serious problem of particulate and NOx emissions that plague diesels.
The engine concept, which was invented by Gerhard Schmitz, has been developed by Ilmor into a working engine using a rapid prototype cast cylinder head, a machined from solid cylinder block and separate electrically powered oil and water pumps. Two overhead camshafts operate the conventional coil spring valvegear with the HP camshaft running at 0.5 x crank speed and the LP camshaft running at 1 x crank speed. The engine is also turbocharged to increase the engine rating.
Principle of operation
The 5-stroke concept engine utilizes two fired cylinders (High Pressure – HP) operating on a conventional 4-stroke cycle which alternately exhaust into a central expansion cylinder (Low Pressure – LP), whereupon the burnt gases perform further work. The LP cylinder decouples the expansion and compression processes and enables the optimum expansion ratio to be selected independently of the compression ratio.
Running of the concept engine has produced impressive fuel consumption readings over a very wide operating range. This is because at the onset of knock a greater percentage of work can be extracted in the LP cylinder, giving a degree of self compensation.
Further development

Having run the proof of concept engine, Ilmor is now looking to produce a second phase development engine for in-vehicle testing. The performance targets for this engine are as follows:

Brake Specific Fuel Consumption of 215 g/kWh

(10% improvement on current 4 stroke technology)

20% lighter than existing production engines

محرك 3 سلندر خماسى الاشواط :hd::12A96E~160:Power density of 150 bhp/L

Advantages of the 5-stroke concept

A secondary cylinder provides an additional expansion process enabling extra work to be extracted, hence increasing thermodynamic efficiency.

The engine runs an overall expansion ratio approaching that of a diesel engine – in the region of 14.5:1

Minimised pumping work due to the downsizing effect from highly rated firing cylinders.

The compression ratio can be reduced to delay knock onset without a reduction in performance.

Because the firing cylinders can be very highly rated, the engine is relatively compact.

The fuel consumption does not rise as rapidly with increasing BMEP, as retarding rejects more energy into the expansion cylinder.

The engine uses 100% conventional technology and so requires no new manufacturing techniques.

5-stroke performance figures

Engine capacity 700cc (turbocharged)

Peak power 130 bhp @ 7000 rpm

Peak torque 166 Nm @ 5000 rpm

Fuel consumption of only 226 g/kWh

Ilmor is using its race engine expertise to bring developments to the field of energy efficient engines. Motor racing is not generally associated with fuel economy, but the lessons learned during periods of intense engine development can be applied with great effect to create highly fuel efficient engines.

Fuel efficiency can be improved by downsizing engines – creating the same amount of power from a smaller swept volume (smaller capacity) which typically burns a smaller amount of fuel. High performance engine design is all about extracting as much power as possible from a defined capacity by the use of intelligent design, low friction coatings or even completely new concepts. All of this knowledge can therefore be applied to maximise the power output of a small capacity, fuel efficient engine.
Our flexible approach ensures that we are able to build on a concept and develop innovative, tailored and most importantly working solutions for our clients, allowing physical testing and ongoing development of the concept.

محرك 3 سلندر خماسى الاشواط

:THUMBS~220::12A96E~160:: 1281F1~121:

Designs to customer specification

Cost effective solutions

Rapid manufacture / Rapid prototype / Short lead time

Sub system or complete engine

5-stroke concept engine

One such example of this application of our engineering knowledge is the patented 5-stroke engine which Ilmor is currently developing. Our objective with the 5-stroke engine is to develop a gasoline engine with fuel consumption and emission levels comparable to that of current diesel engines, without the serious problem of particulate and NOx emissions that plague diesels.
The simplest way to demonstrate the 5-stroke principle was considered to be a 3 cylinder layout with two fired 4-stroke cylinders (High Pressure – HP) alternately exhausting into a central expansion cylinder (Low Pressure – LP) which provides a further expansion process on the exhaust gases (the 5th stroke).
The engine uses a rapid prototype cast cylinder head, a machined from solid cylinder block and separate electrically powered oil and water pumps. Two overhead camshafts operate the conventional coil spring valvegear with the HP camshaft running at 0.5 x crank speed and the LP camshaft running at 1 x crank speed. The engine is also turbocharged to increase the engine rating.
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