FlexValve - Advanced Mechanical Continuously Variable Valve Lift System (CVVL)

Description

An advanced camshaft actuated mechanical valvetrain system that is capable of providing a wide range of fully variable valve lift characteristics.

  • Incorporates DuoCam technology
  • Valve lift is generated by combining two cam profiles
  • Uses a single actuator (hydraulic or electric phaser) to vary the valve lift profile

Technical Benefits

  • Reduced NOx emissions - via Warm Up and Keep Warm strategies
  • Reduced CO2 emissions – For after treatment thermal management, reduced / no requirement for post injection
  • Miller cycle
    • Reduced CO2 (fuel consumption)
    • Improved Performance - Increased power. Low speed torque & transient torque rise
    • Benefits across the full operating map
  • Internal EGR – Exhaust secondary lift strategy for effective after treatment thermal management
    • Reduced CO2 (fuel consumption) - no requirement for post injection

Application Benefits

  • Applicable to a wide range of engines sizes, applications and fuel types
  • Integration - Retains Existing OHC / OHV architectures for simple implementation
  • Reliable - Mechanical valvetrains that use well known and proven technologies
  • Conventional valvetrain layout - Low design and manufacturing investment to integrate
  • Low friction - conventional roller followers, no additional hydraulic pumping losses
  • Simple Controls - same requirements as a conventional hydraulic cam phaser system controlled by the engines ECU
  • Continuously Variable - simple calibration. Direct positional feedback for simple, low cost OBD

FlexValve – Miller Cycle for Commercial Vehicle Engines


FlexValve – Miller Cycle for Passenger Vehicle Engines


FlexValve – Internal EGR via Exhaust Secondary Lift

Contact

Do you have any questions about our valvetrain products? Then get in touch with us using this contact form. We will get back to you soon.

 

Contact us!

Use of cookies and data protection

Rheinmetall uses cookies saved to your device in order to optimize and continuously improve its websites, as well as for statistical purposes. Further information on our use of cookies can be found here, together with our publication details and data protection notice.

By clicking on “OK” you confirm that you have taken note of the information on cookies, the data protection declaration and the publication details. You can also change your cookie settings for this website at any time.

Privacy settings

We place great importance on transparent information relating to all aspects of data protection. Our website contains detailed information on the settings you can select and what effect these settings have. You can change your selected settings at any time. Regardless of the selection you choose, we will not draw any conclusions regarding you as a person (except where you have explicitly entered your details). For information on deleting the cookies, please see the help function in your browser. You can find out more in the data protection declaration.

Change your privacy settings by clicking on the corresponding buttons

Necessary

Cookies essential for the system ensure that the website works correctly. Without these cookies, malfunctions or error messages may occur.

This website will:

  • Store cookies required by the system
  • Store the settings you make on this website

This site will never do the following without your agreement:

  • Store your settings, such as the language selection or cookie banner, so that you do not have to repeat them in the future.
  • Evaluate visits anonymously and draw conclusions to help us to optimize our website.
  • Draw conclusions regarding you as a person (except where you have explicitly entered your details, e.g. in contact forms)

Convenience

These cookies make the website easier to use and save settings, for example, so that you do not have to repeat them every time you visit the site.

This website will:

  • Store cookies required by the system
  • Store your settings, such as the language selection or cookie banner, so that you do not have to repeat them in the future.

This site will never do the following without your agreement:

  • Evaluate visits anonymously and draw conclusions to help us to optimize our website.
  • Draw conclusions regarding you as a person (except where you have explicitly entered your details, e.g. in contact forms)

Statistics

Statistics cookies enable us to evaluate the usage behaviour on the website anonymously – without enabling any conclusions to be drawn about you as a person. This enables us to measure the performance of the website and to improve it continuously to offer a better user experience.

This website will:

  • Store cookies required by the system
  • Draw conclusions regarding you as a person (except where you have explicitly entered your details, e.g. in contact forms)
  • Evaluate visits anonymously and draw conclusions to help us to optimize our website.

This site will never do the following without your agreement:

  • Draw conclusions regarding you as a person (except where you have explicitly entered your details, e.g. in contact forms)

Of course, we will always respect the do-not-track (DNT) setting in your browser. In this case, no tracking cookies are set and no tracking functions are loaded.