If the system studied is a timing configuration that can be built-up from individual models, we advise creating sub-calculations. The output from a sub-system calculation can then be used as input for a new geometry. If no configuration matches the one you are studying, please contact us for additional possibilities.
The geometry of the chain guide in my design is not single curved; what can I do?
If a chain guide is built up from multiple sections with varying radius of curvature and entry points of the chain, we advise replacing that geometry with a single curved geometry.
The best approach for this is:
- Replace the multiple section guide in reality with a single-curvature version in the modeling approach.
- Use the average chain tension as found on the multiple section guide as direct input for the chain guide model.
- Define the geometry of the single-curved guide replacing the multiple section guide with the parameters.
This is based on ‘n’ indicating the number of sections in the guide. This approach means that the total energy dissipated by friction is estimated as accurately as possible.
You can use filters (accessible via the drop-down menu) to show only the relevant information you need at any given moment. Make use of the input values when creating the model and analyze the output values once the model has been created.
Yes. If case chain tensions are unknown or doubtful, and output torques at the sprockets are unknown, it’s helpful to check consistency by assuming a torque per sprocket. A useful guideline can be that each valve needs roughly 1Nm of torque per cylinder. For a 4-cylinder DOHC engine, the torque on the cam sprocket to the inlet valves can be estimated as 4Nm. For the cam sprocket to the outlet valves, a similar value is to be expected.