Benjamin A Bailey

US Patent:

20210355852, Nov 18, 2021

Filed:

May 17, 2021

Appl. No.:

17/321789

Inventors:

- Columbus IN, US
Benjamin Bailey - Columbus IN, US
Jonathan S. Stichter - Columbus IN, US
Julio E. Munoz - Columbus IN, US
Kalkidan Said - Columbus IN, US

International Classification:

F01N 3/20
F16H 45/02
F16D 28/00
B60K 17/02
F16H 47/06
B60K 17/10

Abstract:

A vehicle system includes an engine, a transmission including a torque converter, a clutch configured to selectably couple and decouple the torque converter, and a gearset, a selective catalytic reduction (SCR) exhaust aftertreatment system. An electronic control system may be operatively coupled with the engine, the electronically controllable clutch, and the SCR exhaust aftertreatment system. The electronic control system is configured to evaluate whether an SCR catalyst temperature satisfies at least one minimum temperature criterion, in response to the SCR catalyst temperature satisfying the minimum temperature criterion, permit a neutral at stop operation wherein the electronically controllable clutch is controlled to selectably decouple the torque converter and the one or more gears at least in part in response to the vehicle system being in a stopped state, and in response to the SCR catalyst temperature not satisfying the minimum temperature criterion, prevent the neutral at stop operation.