Nissan 370Z/Infiniti G37 VQ37VHR VVEL System

Nissan 370Z VQ37VHR VVEL System Operation. Visit 370Z.com for full details...

Category:

Autos & Vehicles

Tags:

• 370Z
• Nissan
• VQ37VHR
• VVEL
• 370Z.com
• VQ37VHR cylinder head

[ldmcnutt]

Vtec is 2 cam profiles; One with short duration and low lift for low rpm operation and one with long duration and high lift for high rpm operation. It uses a solenoid to push the cam from the 1st to 2nd profile making different lobes activate the cam followers at a preset RPM.  The VVEL system is continuously variable and the engine is almost always running with throttle plates wide open because it can shut the valve lift down to a few mm. When you step on the throttle, it increases valve lift

[ldmcnutt]

I correct myself. After watching another youtube video (v=LyubJV4siss), it looks like the intake vale can go to zero valve lift when the secondary eccentric shaft is in the full clockwise position.

[caracont]

@metubedot this system is better than vtec, it's much more efficient,

[metubedot]

i think it is like vtec but honda knows better than any manufacture company...VTEC kicked in yooo

[MrOneDr]

The engine doesn't need a throttle plate. BMW's system doesn't have one, and Nissan only uses a throttle plate for emissions purposes.

[SparkDischarge]

@SICKJ0KER No benefit.

For the HCCI engines, it will provide a means to control exhaust gases. Nissan demoed a QR25 with VVEL on both camshafts.

[SparkDischarge]

@755hp The throttles should be fully open in normal operation. Maybe one side can partially throttle for generating vacuum for the brake booster.

[gazboselectamo]

@princezuko3rd I'll try to decipher what you wrote, the 1st sentence made no sense whatsoever. As for an SR20VE making more torque, how is that again? SR20VE = 196nm, K20A = 206nm in 200bhp trim or 215nm in 220bhp depending on the model.

[princezuko3rd]

@gazboselectamo Lol you cannot put torque and any Honda engine, or valve system in the same sentence my friend. The torque curve that VVEL distributes far exceeds that of V-TEC and I-VTEC. That should alrdy be proven with the SR20VE.

[gazboselectamo]

@partofdworld Nope, i-VTEC adds cam phasing which alters cam timing similar to BMW VANOS. The 2 stage lift VTEC system is otherwise identical. What no-one has mentioned yet however is most of the new continuously variable systems like VVEL can't do is max lift at the same time as min duration. Lift increases torque throughout the bandwidth, duration affects where. A system that could do it all would enable a very wide torque band from way low to as high as the engine would rev.

[partofdworld]

@ldmcnutt howevor the IVTEC system is continuously variable right ???

[SICKJ0KER]

Wait, why don't they do this for exhaust? Price? Takes up too much space?