Mitigating Vibration for a Heavy-Duty Diesel Cylinder Deactivation Truck Eaton

Format:

Book

Conference/Event

Author/Creator:

Pieczko, Matthew, author.

Contributor:

Hamler, Jesse

McCarthy, Jr., James

Conference Name:

SAE WCX Digital Summit (2021-04-13 : Live Online, Pennsylvania, United States)

Language:

English

Physical Description:

1 online resource cm

Place of Publication:

Warrendale, PA SAE International 2021

Summary:

Commercial vehicles require fast aftertreatment heat up in order to move the selective catalyst reduction (SCR) into the most efficient temperature range to meet upcoming NOx regulations. Heavy duty cylinder deactivation (CDA) is an important technology to meet these regulations. One of the challenges with implementing CDA in the heavy-duty market is to ensure acceptable engine and vehicle vibration. The purpose of this paper is to mitigate CDA vibration on a vehicle to acceptable levels. Emphasis was placed at the idle operating condition. Idle is the most challenging operating mode to enable, as deactivating cylinders reduces the frequency of the forcing function due to engine firing, which leads to a need to isolate these lower frequencies. A focused modal analysis of the engine (source), frame (path), and cabin (path/receiver) was used to characterize the vehicle system. The work showed that a change in cab mounts reduced the observed vibration levels dramatically while operating in CDA. This work shows that mitigation of vibration in a heavy-duty truck while operating in CDA mode is feasible

Notes:

Vendor supplied data

Publisher Number:

2021-01-0661

Access Restriction:

Restricted for use by site license