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Valeo Presents New Smart Valve Actuation Technology - the CamlessEngine

Becomes a Reality

Valeo today presented its latesttechnology for reducing fuel consumption and pollutant emissions by 20% usingan engine cylinder head design that adopts Smart Valve Actuation (SVA) in place of the conventional mechanicaloperation of engine valves by the cam belt, camshaft and hydraulic cam followers.

"SVA is the first of many innovativesystemsthat Valeo intends to actively develop and market in order to meet increasing demand for reduced fuel

consumption and pollutant emissions following the recent acquisition of Johnson Controls' Engine ElectronicsDivision. Enginemanagement and power electronics are now core technologies for the Group which will drivestrong future growth," said Valeo Chairman & CEO Thierry Morin.

A brand new technology

In a camless engine, each engine valve is operated individually by an actuator that is placed on the uppersurface of the cylinder head, directly above the valve guides. Each actuator is linked to an engine-mountedValve Control Unit (VCU) that ensures the optimal positioning of all valves and performs the power drivefunction.

Significant benefits for consumers

By controlling residual gases, minimizing pumping losses and deactivating cylinders and valves, this

environmentally friendly technology reduces fuel consumption and pollutant emissions by 20%. Consumers willalso benefit from enhanced performance and driving comfort, due to an increase in low-end engine torque.

The SVA developmentprogram is currently being undertaken with support from several leading carmanufacturers and is scheduled for volume production in 2009.

Web

http://www.indiacar.net/news/n14042.htm

may debut on 2009 Fiat 500, Alfa Junior

Posted Tuesday, May 20, 2008 by g0llychelsea

It's been bandied about for some time, but Valeo is looking to finally make it a reality. The supplier isdeveloping a camless engine that utilizes electromagnetic solenoids to drive the valves, providing unlimitedcontrol of the valves, reducing emissions by up to 20-percent and improving performance in the process.

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http://paultan.org/archives/2006/12/15/valeo-has-customers-for-half-camless-engine/

December 15, 2006 at 7:20 pm Filed underCars,Thoughts

French automotive engineering company Valeo says that its camless enginedevelopment project will likely be ready by 2010 or 2011, and it already has a few

customers working together with them, though Valeo board member Martin Haub

declined to name who the customers are.

Valeos camless engine is not a full camless engine, but rather half camless, where only

the intake valves are electronically actuated with a camshaft. The exhaust valves areactuated using the traditional camshaft method. Valeo says it took the half camless

approach because this gives the Valeo half camless engine 80 percent of the performanceof a fully camless engine while keeping costs down by half as much - as it is, a four-

cylinder half camless engine is about 300 euros more than a normal camshaft engine. As

for benefits over a normal engine, Valeo says the engine has 15% to 20% better fueleconomy, as well as 15 to 20% better torque at the low end of rev ranges.

Mercedes Benz already has its own camless engine project calledKDI EVT, with the

resulting cam-less valvetrain engine expected to be supercharged with direct injection.

BMW is also researching the technology, but is concerned with cost and durability, saysBMW general manager for calibration V8 engines Christian Bock. Bock says the

technical barrier to camless engines are not the valve actuators themselves but rather the

sensors to make it all work with precision. Currently sensors are no accurate enough andhave engine-life durability and reliability issues.

Look after the jump for a diagram from Valeo explaining how their electronic valve

actuators work.

Related Posts:

Camless Solenoid Valve Engines

KDI EVT in the new 2008 C-Class
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