VALDYN - valvetrain design

VALDYN - valvetrain design

Valvetrain design

VALDYN Kinematics caters to the design and kinematic analysis of valvetrain systems. Using a building-block approach VALDYN provides users with a library of select standard and unconventional valvetrains. All valvetrain types can be analyzed including linearly translating and swinging followers with or without a push rod and rocker systems. SABR Kinematics can be used to assess an existing cam design or to generate a cam profile using either the Ricardo ‘Multipol’ method or a general spline method. A number of methods of spring pack design are available to allow combined optimization with cam profile design.

VALDYN Kinematics produces comprehensive outputs to enable assessment of spring/cam design, including cam contact Hertzian stress, oil film thickness, cam wear, spring cover, spring stress and spring natural frequency. Data can easily be transferred to VALDYN Dynamics for assessment of the design in the context of the timing drive and to assess dynamic aspects such as spring surge and valve bounce.

Key features

  • Building-block approach to model construction
  • Caters for novel systems
  • Tribological analysis from kinematic and dynamic standpoints
  • Detailed spring model including coil clash
  • Dynamic analysis in context of complete engine
  • Advanced spline methods for cam design
  • Arbitrary shaped swinging cam follower
  • Spring pack natural frequency

Relevant resources

Dynamic analysis of a valvetrain system and integrating for 3D structural analysis

Dynamic analysis of a valvetrain system and integrating f...

This is dynamic analysis of a valvetrain system in VALDYN integrated with FEARCE... Download
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An analytical process to minimise gear rattle risk

An analytical process to minimise gear rattle risk

This presentation introduces gear rattle risk evaluation throughout the complete... Download
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Valvetrain friction - modeling, analysis and measurement of a high performance engine valvetrain system

Valvetrain friction - modeling, analysis and measurement ...

This presentation covers how valvetrain friction makes a significant contribution... Download
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Simulation and analysis drives success

Simulation and analysis drives success

Ricardo delivered the upgraded engine, driveline and exhaust of the BMW K1300... Download
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Low-friction engineered surfaces

Low-friction engineered surfaces

This presentation covers the role of friction and wear in transportation and... Download
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Correlation of VALDYN link-by-link chain modeling

Correlation of VALDYN link-by-link chain modeling

This paper covers measurements taken on the timing drive of a fired V6 engine... Download
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