Table of contents

• Suzuki patent Variable valve control 2.0
• Variable inlet and outlet

Suzuki

8th pictures

Suzuki

1/8
Suzuki is working on a new variable valve control.

Suzuki

2/8
It should serve the inlet and outlet and be hydraulically controlled, as a corresponding patent application shows.

Suzuki

3/8
A corresponding patent application shows a modern system that relies on variable timing on the inlet and outlet side as well as hydraulic control.

Suzuki

4/8
The hydraulic control receives its information from the CDI.

Suzuki

5/8
The control module is located on the right of the cylinder head.

Suzuki

6/8
The camshaft adjusters are controlled from here.

Suzuki

7/8
The system is slim.

Suzuki

8/8
It could celebrate its premiere on the next Suzuki GSX-R 1,000.

counselor

technology & future

Suzuki patent: Variable valve control 2.0

Suzuki patent
Variable valve control 2.0

Suzuki is working on a new variable valve control. It should serve the inlet and outlet and be hydraulically controlled, as a corresponding patent application shows.

Uli Baumann,
Uli Baumann

January 16, 2019

Variable valve controls are nothing new to motorcycle manufacturer Suzuki. The Japanese are currently installing a system in the GSX-R 1000 that uses centrifugal weights on the camshaft drive wheel to adjust the timing when the engine speed increases. However, the system only works on the intake side and also has no influence on the valve lift – it only rotates the cam profile. The purely mechanical system was developed to meet MotoGP regulations. Electronically or hydraulically controlled systems are not permitted here. The Suzuki system works. However, it is far from the possibilities that fully variable systems like ShiftCam from BMW or the new one Honda system, Offer.

Variable inlet and outlet

But the Japanese are already planning the next generation of variable valve timing. A corresponding patent application shows a modern system that relies on variable timing on the inlet and outlet side as well as hydraulic control. The new VVT system should make its debut in the next GSX-R 1000. However, it can also be adapted to other engine concepts.

Unlike the systems from BMW and Honda, Suzuki leaves it to a twisting of the cam profiles to change the valve timing. A variable valve lift is not provided. In order to turn the camshafts, special modules are actuated at their ends by means of oil pressure. Overall, the Suzuki system is reminiscent of the DVT system from Ducati or systems commonly used in automobile engine construction.

The Suzuki VVT system should help to find more power, but still meet the increasingly strict emissions regulations.

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