Detent Profile Optimization to Improve Shift Quality of Manual Transmissions Mahindra and Mahindra Limited

Format:

Conference/Event

Author/Creator:

Siriyapuraju, Siriyapuraju, author.

Contributor:

Eswaramoorthy, Prithiviraj

Konduru, Viswasai

Conference Name:

SAE 2015 World Congress & Exhibition (2015-04-21 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2015

Summary:

AbstractThe customer of today is sensitive towards shift quality. The demand is for a crisp and precise gear shift with low shift effort. The impulses from synchronizers make shifts feel notchy. After synchronization the blocker ring releases the sleeve. The sleeve then hits the teeth of the clutch body ring. The second impulse causes a phenomenon called double bump. This can be felt at the hand and makes a shift feel notchy or sluggish. An ideal way to overcome this is to optimize the detent profile.This paper explains in detail the various factors that contribute to the perceived shift feel. Various methods to optimize the forces on the knob by changing the detent profile are discussed. Gear Shift Quality Assessment (referred as GSQA henceforth) is a tool to acquire the required shift feel data. Using this tool shift efforts and kinematics of a 5 speed manual transmission are plotted for illustration. The calculations required to optimize the detent profile are explained in detail. The necessary precautions to be taken are also discussed

Notes:

Vendor supplied data

Publisher Number:

2015-01-1135

Access Restriction:

Restricted for use by site license