US 7,597,408 B2Granted

Method for compensating regenerative braking amount when regenerative braking of vehicle fails

AssigneeHyundai Motor Company

InventorChang Hyun Kim

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Abstract

A method for compensating a regenerative braking amount when regenerative braking of a vehicle fails due to an error in controller area network (CAN) communications between an electronic brake system (EBS) and a hybrid control unit (HCU). The method includes steps of determining whether or not the regenerative braking is activated, remembering a regenerative braking control amount in the HCU and the EBS, learning and remembering a difference between the regenerative braking control amount in a normal state calculated just before the failure and the braking amount for the failure check in the HCU and the EBS, compensating the braking amount for the failure check with the difference value between the normal regenerative braking control amount and the braking amount for the failure check, and performing a regenerative braking control in the HCU and the EBS respectively.

Claims3

Dependent claims

A method for compensating a regenerative braking amount when regenerative braking of a vehicle fails, comprising:

determining whether or not the regenerative braking is activated;
remembering a regenerative braking control amount in a hybrid control unit and an electronic brake system, if determined that the regenerative braking is activated in the previous step;
calculating a braking amount for failure check in the hybrid control unit and the electronic brake system when there occurs a failure related to the regenerative braking;
learning and remembering a difference between the regenerative braking control amount in a normal state calculated just before the failure and the braking amount for the failure check in the hybrid control unit and the electronic brake system;
compensating the braking amount for the failure check with the difference value between the normal regenerative braking control amount and the braking amount for the failure check;
and
performing a regenerative braking control in the hybrid control unit and the electronic brake system respectively.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 11/648,737Filed 29 Dec 2006
Priority: KR 10-2006-011478720 Nov 2006
Published: US 2008/0116744 A122 May 2008
Granted: 6 Oct 2009
Term ends: Not estimatedThe source records don’t support an estimate.

Classification23 codes

B60T 8/00
Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions
B60L 3/0076
Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train: relating to braking
B60L 3/0084
Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train: relating to control modules
B60L 3/04
Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy…:…