MAHLE CamInCam™ camshaft

This 3D Animation shows in photo realistic quality construction and function of the MAHLE CamInCam™ camshaft. This world novelty enables variable valve timing and therefore higher torque and performance at lower fuel consumption.
The new CamInCam™ camshaft is an ideal solution, particularly for engines with OHV (OverHead Valve) and SOHC (Single Over-Head Camshaft) valve trains. Due to its variability, ideal intake and exhaust timing can be adjusted for any driving condition.
The MAHLE CamInCam™ camshaft is the only variable valve control available in the market for this type of engine. The results are improved performance, higher torque, lower fuel consumption, reduced emissions, and improved idling behavior.

Category:

Autos & Vehicles

Tags:

• CamInCam
• Animation
• 3D
• camshaft
• fuel
• MAHLE
• animated
• engine

[zapwatt]

@Sebastijanovski Yeah we know that but for pushrod engines (single cam in block) this is the greatest camshaft breakthrough ever. We can now enjoy the benefits of DOHC tractability without needing them and enjoy lower inertia too.

[Sebastijanovski]

Ahem DOHC,... Plus, the last paragraph in the description is pure bullshit.

[gyro231995]

While this is a very impressive and interesting piece of engineering goodness, I disliked this video to be a douche.

[oOoxelAoOo]

@MrEricJameson It seems to have a constantly variable degree of valve overlap. Looks like they're trying to improve volumetric efficiency throughout the operating rev range of the engine. It'd be good for both performance and emissions.

[kimgulle]

@brw147 Best phones.. xD

[brw147]

@kimgulle V-Tech makes phones.

[kimgulle]

Totally awesome. But it's only valve timing and no variable duration and so on. V-tech is still the best.

[KingsOfCompression]

awesome

[88jamesy88]

Check out Ford's new system on its Coyote and EcoBoost engines- variable for timing, duration and lift- allowing the same engine to be tuned for max emission, max torque, or max hp at ANY given RPM. The direct injection 3.5 V6 makes 430ft/lb torque in the trucks @ a mildly tuned 365 hp. Check it out!

[diablotijuanero1]

i'm a cam grinder in san diego... what cam is that??? ty

[MrEricJameson]

The Mahle CamInCam system does not vary the valve opening duration. This means that it has a very limited effect on the engine's performance. Basically it is only used in the Viper to help the engine pass emmission standards. The helical camshaft appears to be the only existing mechanical continuously variable duration system.

[maximillianof98]

... the HELICAL camshaft is the only design that can varies the DURATION, continuously. (search wikipedia, "Helical camshaft")

your design have the potential to do the same, but less complicated and easier to manufactured.

[maximillianof98]

hi mahlezu,

i think your design can also be employ on a DOHC engine, no only to change the timing, but also the DURATION, CONTINUOUSLY.

each valve/rocker arm to be service by 2 "half cam lobe"

eg, on the intake, fix the "half cam" for the valve closing, while the "half cam lobe" for the valve opening be attach to the inner shaft and adjusted accordingly (advance) to RPM. do the opposite on the exhaust cam.

it will be better than VTEC (non continuous) but less complicated than HELICAL SHAFT.

[mikeb1444]

@spthirtythree

My best guess on the mechanism would be between cam chain tensioners along with some centrifugal gismos, or, a cam chain tensioner on one part, and oil pressure to the other. Those are more able to rev high at least.

[RenzeZielman]

I guess its actuated the same way as the eccentric weights on a Wacker vibratory plate compactor: You can let it "jump" forward or reverse by rotating the eccenter weights on the shaft by means of hydraulic pressure, fed through the shaft center. Lobes are more or less comparable to the eccenterweights of the vibratory compactor. I once had one stuck a couple of days after a repair, because i used too much instant gasket when reassembling after repair !

[marek0086]

some use oil pressure (hydraulic controlled).

Some use a 'stepper' motor to change the position.

[spthirtythree]

@ariffkm: This is a camshaft for a pushrod engine. not SOHC, but basically does the same thing as a DOHC

@yan: the video shows the camshaft that went into the SRT-10 Viper, but I think Chrysler also uses it in their new Hemi 5.7 V8.

and @ the rest of the world: anyone know the answer to jfv's question? I'm also curious what mechanism controls the phase offset for the inner shaft.

[xicoze54]

we are in presence of a great video director. talented man. he knows very well what he wants to show and all it's very comprehensive.

[jfv65]

brilliant, yet simple design.

Question remains: how is the valvetiming managed/actuated/changed? Oilpressure? Electric motor? Vacuum?

[yanzodadon]

how many valves to a cylinder does tthis have?

[ariffkm]

is this "single over head cam"(SOHC)??

[Binaer123]

Nice animation

[enginemasterbuilder]

i believe that they mean that you can change the duration by removing the drift keys and actually shifting the lobe locations

[nighawaaaxx]

how do the vairable lobes.... vary.. lol..

i mean they have some sort of thing that bolts to the end of the cam on the opposite side of the cam gears but hoe does it change it and when do they usually kick in ?