Product category:
Valves and manifolds
News Release from: Schaeffler (UK) | Subject: Valve trains for IC engines
Edited by the Processingtalk Editorial
Team on 10 December 2007
Valve trains for internal combustion
engines guide
Schaeffler UK has just published a FREE reference guide to the development, manufacture and application of the latest valve train systems for internal combustion engines
A FREE, pocket-sized, 70-page guide to valve train systems for internal combustion engines is now available from Schaeffler Published by precision bearing and automotive component manufacturer the Schaeffler Group, the reference guide includes information on the development, manufacture and application of valve train systems and components for internal combustion engines, including the latest Schaeffler switchable and fully variable vale train systems, which help OEMs reduce vehicle fuel consumption and emissions
This article was originally published on Processingtalk on 15 Aug 2008 at 8.00am (UK)
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The book will be of interest to students, car mechanics, design engineers, mechanical engineers or drivers who wish to find out more about how their engine develops its power.
Since the introduction of multi-valve technology in automotive engine building, there has been considerable progress in valve train technology.
Therefore, new terms are now being used that some engineers may find confusing: finger followers, tappets, hydraulic valve lash adjustment, variable and fully variable valve trains, and so on.
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These engine components are responsible for supplying the engine with the necessary air for aspiration and for developing power.
This new technology has also significantly improved the performance of petrol and diesel engines in the last 20 years.
The guide covers the various valve train systems now available, including Schaeffler INA-branded systems, and the components these systems require.
In five concise chapters, the various basic valve train concepts are explained, including tappet valve trains and rocker-type valve trains, as well as the design, manufacture, testing and calculation of such systems.
The book concludes with a chapter on switchable and continuously variable valve trains.
Fully variable valve trains that have already reached volume production include the BMW 'Valvetronic' system, which enables reductions in vehicle emissions and fuel consumption.
Engineers at the Schaeffler Group Engine Systems division have recently developed a fully variable valve control system which, in tests, reduced fuel consumption by 10% compared to conventional valve train systems.
A significant reduction in diesel engine NOx emissions was also achieved, as well as improved engine response and torque.
The INA 'UniAir' (Universal Air) system is a cam-actuated, electro-hydraulic valve train system, which is supplied by the existing engine oil circuit of the vehicle.
The system can be used in both petrol and diesel engines and should be ready for volume production in 2009.
For a FREE copy of the guide, or for more information on the complete Schaeffler range of valve trains for internal combustion engines, please visit the website, or use the Processingtalk Reader Response Service. Request a free brochure from Schaeffler (UK) ...
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