METHODS FOR A ROAD SURFACE METRIC

Methods and systems are provided for estimation of a road roughness index (RRI) and adjusting vehicle operation based on the metric. In one example, a method may include estimating the RRI as a function of a pitch energy and a roll energy of the vehicle travelling on the road. In response to the RRI...

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Hauptverfasser:	Gerow, Matthew, Grant, Robert, Rollinger, John E, Richards, Adam, Lin, Steven
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING COMBUSTION ENGINES CONTROLLING COMBUSTION ENGINES HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT LIGHTING MEASURING MEASURING ANGLES MEASURING AREAS MEASURING IRREGULARITIES OF SURFACES OR CONTOURS MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION,OR SHOCK MECHANICAL ENGINEERING PHYSICS TESTING WEAPONS
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creator	Gerow, Matthew Grant, Robert Rollinger, John E Richards, Adam Lin, Steven
description	Methods and systems are provided for estimation of a road roughness index (RRI) and adjusting vehicle operation based on the metric. In one example, a method may include estimating the RRI as a function of a pitch energy and a roll energy of the vehicle travelling on the road. In response to the RRI being higher than a threshold, engine operation such as EGR flow rate may be adjusted.
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subjects	BLASTING COMBUSTION ENGINES CONTROLLING COMBUSTION ENGINES HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT LIGHTING MEASURING MEASURING ANGLES MEASURING AREAS MEASURING IRREGULARITIES OF SURFACES OR CONTOURS MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION,OR SHOCK MECHANICAL ENGINEERING PHYSICS TESTING WEAPONS
title	METHODS FOR A ROAD SURFACE METRIC
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