Powertrain calibration method to improve drivetrain oscillation after tip-in maneuvers with mechanical throttle body systems Ford Motor Company Brasil LTDA

Format:

Conference/Event

Author/Creator:

Possamai, Luís Felipe Bastiani, author.

Conference Name:

2008 SAE Brasil Congress and Exhibit (2008-10-07 : Sao Paulo, Brazil)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2008

Summary:

When a vehicle is subjected to a transient torque event by its engine, the powertrain usually responds in an oscillatory manner. This is a characteristic of the system, due to the lashes and the stiffness. This oscillatory behavior disturbs the driver/passengers when showing high amplitude and/or a determined frequency. The powertrain calibration must act to attenuate oscillations in order to avoid driveability issues. One approach is to modulate the spark advance to absorb the oscillatory response. This paper proposes a method to calibrate this 3rd order high pass filter algorithm, making it less time consuming than a pure empirical and trial and error manner. Benefits of 80% reduction of time consumption were obtained by applying the proposed methodology. Besides that, for the same time invested, better results were achieved with the system presenting more robust responses over the vehicle operating ranges

Notes:

Vendor supplied data

Publisher Number:

2008-36-0128

Access Restriction:

Restricted for use by site license