JACK-UP DETERMINATION DEVICE FOR VEHICLE

JACK-UP DETERMINATION DEVICE FOR VEHICLE

PROBLEM TO BE SOLVED: To accurately determine jack-up by determining the jack-up based on both stroke and ground-contact load of a wheel without enhancing a determination reference value as compared with the case of a conventional jack-up determination device. SOLUTION: In the device, when wheel spe...

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1. Verfasser: MIZUTANI KYOJI
Format: Patent
Sprache:eng
Schlagworte:
PERFORMING OPERATIONS
TRANSPORTING
VEHICLES IN GENERAL
VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISEPROVIDED FOR
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creator MIZUTANI KYOJI
description PROBLEM TO BE SOLVED: To accurately determine jack-up by determining the jack-up based on both stroke and ground-contact load of a wheel without enhancing a determination reference value as compared with the case of a conventional jack-up determination device. SOLUTION: In the device, when wheel speed Vwi of any one of wheels is 0 and it is determined that the vehicle is stopped (S20), the ground-contact load Pwi of the wheel at the stopping state of the vehicle is made to 0, stroke Swi in a rebound direction of the vehicle is made to a positive value and a relationship of the ground-contact load Pwi and the stroke Swi is made to Swi=a Pwi (a is negative constant), and it is determined whether or not the wheel of which the ground-contact load Pwi is a negative value exists (S30). When the wheel of which the ground-contact load Pwi is the negative value exists, and the stroke Swi and the ground-contact load Pwi of the wheel satisfies a relationship of Swi>ai Pwi (S50), it is determined that the jack-up is performed and exchange of a tire is possibly performed (S60). COPYRIGHT: (C)2005,JPO&NCIPI
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SOLUTION: In the device, when wheel speed Vwi of any one of wheels is 0 and it is determined that the vehicle is stopped (S20), the ground-contact load Pwi of the wheel at the stopping state of the vehicle is made to 0, stroke Swi in a rebound direction of the vehicle is made to a positive value and a relationship of the ground-contact load Pwi and the stroke Swi is made to Swi=a Pwi (a is negative constant), and it is determined whether or not the wheel of which the ground-contact load Pwi is a negative value exists (S30). When the wheel of which the ground-contact load Pwi is the negative value exists, and the stroke Swi and the ground-contact load Pwi of the wheel satisfies a relationship of Swi&gt;ai Pwi (S50), it is determined that the jack-up is performed and exchange of a tire is possibly performed (S60). 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SOLUTION: In the device, when wheel speed Vwi of any one of wheels is 0 and it is determined that the vehicle is stopped (S20), the ground-contact load Pwi of the wheel at the stopping state of the vehicle is made to 0, stroke Swi in a rebound direction of the vehicle is made to a positive value and a relationship of the ground-contact load Pwi and the stroke Swi is made to Swi=a Pwi (a is negative constant), and it is determined whether or not the wheel of which the ground-contact load Pwi is a negative value exists (S30). When the wheel of which the ground-contact load Pwi is the negative value exists, and the stroke Swi and the ground-contact load Pwi of the wheel satisfies a relationship of Swi&gt;ai Pwi (S50), it is determined that the jack-up is performed and exchange of a tire is possibly performed (S60). 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subjects PERFORMING OPERATIONS
TRANSPORTING
VEHICLES IN GENERAL
VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISEPROVIDED FOR
title JACK-UP DETERMINATION DEVICE FOR VEHICLE
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