CvtGearbox
From BeamNG
Contents
The CVT gear box (device name "cvtGearbox") is a model of a continuously variable transmission including a one way hill holding viscous clutch, and a parking lock. Unlike an automatic gearbox, the CVT changes effective gear ratio continuously to maintain a target engine speed. In a Powertrain, it can be placed behind a torqueConverter, and should have a shaft, differential, rangeBox, or splitShaft connected to it.
Jbeam Properties
Name | Type | Optional | Default Value | Description |
---|---|---|---|---|
minGearRatio | number | true | 0.5 | This is the tallest gear ratio available to the gearbox. |
maxGearRatio | number | true | 2.5 | This is the shortest gear ratio available to the gearbox. |
oneWayViscousCoef | number | true | 5 | This value controls how stiff the hill holding viscous clutch is. A higher value will make the vehicle less likely to creep backwards on a hill. |
oneWayViscousTorque | number | true | =onewayViscousCoef*20 | The upper limit for hill holding torque, used for stability reasons. |
parkLockTorque | number | true | 1000 | The upper limit for the parking lock torque. If exceeded, the parking lock will slip. |
parkLockSpring | number | true | =parkLockTorque | The stiffness of the parking lock spring. Too high may cause instability. |
friction | number | true | 0 | The friction torque applied to the input side of the gearbox. |
Examples
Here is an example of the required powertrain section, along with the additional section for the properties.
"powertrain": [ ["type", "name", "inputName", "inputIndex"], ["cvtGearbox", "gearbox", "torqueConverter", 1], ], "gearbox": { "minGearRatio":0.8, "maxGearRatio":2.7, "parkLockTorque":2000, "oneWayViscousCoef":8, "friction": 1, },