How does reverse work?
How does reverse work?
Junior User
Joined: Oct 2001
Posts: 67
Likes: 0
From: Colorado
How does reverse work?
[updated:LAST EDITED ON 09-Mar-02 AT 12:43 PM (EST)]Jthomps3,
I am assuming you are asking about a automatic?. To understand how reverse works in a automatic you need to understand the principles of a planetary gearset...To get reverse in a planet gearset you have to hold the planet pinion carrier and drive either the ring gear or the sun gear...If you drive the sun gear of a planet gearset clockwise and you hold the pinion carrier, the ring gear with turn counterclockwise...Now if you have a input shaft and output shaft connected to the planet assembly, say the input shaft to the sun gear through clucthes and the output shaft to the ring gear you now have reverse...Now most transmissions use two planetary gearsets...You mix and match the input/output of one to the other and you can get a gear reduction ..The C6 for example is 2.175 to 1 reduction in reverse...The C6 in reverse is using what is called the Reverse and High clutch and the Low and Reverse clutch and the Reverse planetary.. C6 people usually call them the Direct clutch and the Reverse clutch...Through the Direct clutch the input shaft turns the sun gear and the Reverse clutch holds the pinion carrier stationary...The output shaft is splined into the reverse planetary ring gear...Now as I stated earlier, we are driving the sun gear and holding the carrier..The ring gear turns in the opposite direction and your vehicle backs up..
Hope this helps...
Metro2
I am assuming you are asking about a automatic?. To understand how reverse works in a automatic you need to understand the principles of a planetary gearset...To get reverse in a planet gearset you have to hold the planet pinion carrier and drive either the ring gear or the sun gear...If you drive the sun gear of a planet gearset clockwise and you hold the pinion carrier, the ring gear with turn counterclockwise...Now if you have a input shaft and output shaft connected to the planet assembly, say the input shaft to the sun gear through clucthes and the output shaft to the ring gear you now have reverse...Now most transmissions use two planetary gearsets...You mix and match the input/output of one to the other and you can get a gear reduction ..The C6 for example is 2.175 to 1 reduction in reverse...The C6 in reverse is using what is called the Reverse and High clutch and the Low and Reverse clutch and the Reverse planetary.. C6 people usually call them the Direct clutch and the Reverse clutch...Through the Direct clutch the input shaft turns the sun gear and the Reverse clutch holds the pinion carrier stationary...The output shaft is splined into the reverse planetary ring gear...Now as I stated earlier, we are driving the sun gear and holding the carrier..The ring gear turns in the opposite direction and your vehicle backs up..
Hope this helps...
Metro2
Postmaster
Joined: Jul 2001
Posts: 4,038
Likes: 3
From: South Kitsap County, WA
How does reverse work?
If you put three coins together in a line on a flat smooth, surface, and "rotate" the top coin (the input shaft from the engine), the next coin acts as a gear being slid into position by a shift fork and rotates the opposite direction, then follow the rotation to the last coin (which is the output to the rear) and will rotate the direction as the first. Add a fourth coin after the "gear", but before the "output." This is the reverse idler. The shift fork places this gear in to change the direction of rotation of the final output. If you "rotate" the coins before and after putting in this fourth coin, you can see how it changes direction of the final output and causes you to go backwards.
Did I lose you? I think I lost me....
-Kerry
Did I lose you? I think I lost me....
-Kerry
