Français
3. Gearbox ratio selection
Gear selection is not as straightforward as it might first appear. It calls on objective considerations, such as the vehicle's maximum speed in the top gear, but also on subjective observations linked to driving pleasure, as in the case of gear ratios. Added to this are constraints relating to pollutant emissions and fuel consumption, making the choice of gear ratios a delicate compromise.
3.1 Notions of gear ratio, opening and ratio length
The gear ratio i bn (the index n defining the selected ratio) of a gearbox is defined as the ratio of the input shaft speed (primary shaft at motor angular speed ω m ) to the output shaft speed (secondary shaft, angular speed ω...
The Ultimate Scientific and Technical Reference
This article is included in
Hydraulic, aerodynamic and thermal machines
This offer includes:
Knowledge Base
Updated and enriched with articles validated by our scientific committees
Services
A set of exclusive tools to complement the resources
Practical Path
Operational and didactic, to guarantee the acquisition of transversal skills
Doc & Quiz
Interactive articles with quizzes, for constructive reading
Gearbox ratio selection
Conclusion
Bibliography
The Ultimate Scientific and Technical Reference
