Photo AI
Study the cross-sectional view of a double epicyclic gear system in FIGURE 9.1 below - NSC Mechanical Technology Automotive - Question 9 - 2022 - Paper 1
Question 9
Study the cross-sectional view of a double epicyclic gear system in FIGURE 9.1 below. Answer the questions that follow. FIGURE 9.1 9.1.1 Label parts A–F. 9.1.2 De... show full transcript
Worked Solution & Example Answer:Study the cross-sectional view of a double epicyclic gear system in FIGURE 9.1 below - NSC Mechanical Technology Automotive - Question 9 - 2022 - Paper 1
Step 1
Step 2
Describe, in detail, the operation of the gear system in FIGURE 9.1 when low gear ratio/gear reduction is obtained.
Answer
When the system operates under low gear ratio or gear reduction, the following occurs:
-
Input Shaft Functionality: The input shaft (A) is driven, which in turn rotates the sun gears.
-
Brake Band Role: The brake band (B) functions to hold the annulus (C) stationary, ensuring that no movement occurs at this component.
-
Planetary Gear Dynamics: The planetary gears (F) rotate around the stationary annulus (C), transferring motion to the planet carrier (D).
-
Output Motion: The planet carrier (D) and the output main shaft will rotate at a reduced speed due to the configuration of the gears. This process allows for efficient reduction of speed while maintaining torque, resulting in greater power delivery to the wheels.