Variable valve timing: what it adjusts and what the diagram shows
What variable valve timing adjusts and what the timing diagram represents, based on the available information.
Key points
Secondary sources describe variable valve timing as a system that automatically adjusts the opening and closing of engine valves. The timing diagram illustrates the positional relationship between the valves and the crankshaft, but without a specific schematic, it does not allow for the assignment of precise values.
What variable valve timing adjusts
The secondary sources consulted describe that variable valve timing can automatically adjust the opening and closing of the valves. The information available here is limited to those adjustments; it does not allow specifying other functions or attributing concrete results to the system.
Section references:
What the diagram represents and how to interpret it
The secondary sources consulted describe the timing diagram as a representation of the relationship between the position of the valves and that of the crankshaft.
To interpret a specific diagram, check what elements it identifies and what references it includes. Without the schematic and its references, only the general relationship can be described: it is not possible to determine positions or assign figures.
Section references: Diariomotor: ¿Qué es la distribución variable y para qué sirve? ↗
- Check if the schematic identifies the valves and the crankshaft.
- Interpret only the relationship between those positions that the drawing shows.
- If the schematic or its references are missing, do not assign values.


