Gear Shifter
Automatic Gear Shifter Component
The Gear Shifter component automatically changes the gear for use with various gearboxes in the Driveline Component Library. The gear number (output) is incremented by 1 when the engine RPM (input) passes the upper threshold (ωhigh). Similarly, when the engine RPM goes below the lower threshold (ωlow), the gear number is decremented by 1.
Note: To avoid multiple gear shifts due to small variations in the engine RPM, pass the input signal through a Lowpass Butterworth filter first.
Internal Structure
Connections
Name
Condition
Description
ID
RPM
-
Real input for engine speed measured in RPM
Gear Number N
Integer output for the gear number. Nmin≤N≤Nmax
GearNo
Parameters
Symbol
Default
Units
ωlow
1500
Lower RPM threshold for down-shifting
minw
ωhigh
4000
Upper RPM threshold for up-shifting
maxw
N0
1
−
Initial Gear Number
initialGear
Nmin
0
Minimum Gear Number
minGear
Nmax
4
Maximum Gear Number
maxGear
See Also
Driveline Library Overview
MapleSim Library Overview
1-D Mechanical Overview
Engines and Dynamometers
Download Help Document
