2-Step Variable Valve Actuation

Jacobs' Two-Step Variable Valve Actuation (VVA) system is for OEMs challenged with meeting future transient emissions and fuel economy targets at a lower overall system cost. 

down arrow
JVS's 2-Step Variable Valve Actuation Technology

Performance benefits of Jacobs’ 2-Step VVA

  • Reduces fuel consumption
  • Optimizes compression ratio vs load
  • Improves transient response
  • Improves tail pipe emissions by keeping the aftertreatment system hot during low load operation
  • Reduces engine-out NOx emissions
  • Available for multiple valvetrain types
  • Provides many benefits of a fully-flexible VVA system with a less complex, lower cost system
     
2-step VVA performance graph

How Jacobs’ 2-Step VVA works

Using Jacobs’ proven mechanisms, a variable lift valvetrain provides the means to meet exhaust thermal management, engine performance and emissions needs with minimal changes to the base engine, with the goal of reducing the size and cost of the aftertreatment system leading to reduced overall system costs.

Let's talk about your program

Our engineers are always available to discuss your current or future technology challenges. Contact us using this form, and a member of our team will contact you within two business days.

We collect your name, company, country, and email address so that a Jacobs representative may contact you to answer your questions. Review our privacy notice for additional information on how we protect and manage your submitted data.

Learn more

Download this information package for more details and technical information about Jacobs’ 2-Step Variable Valve Actuation.