Robert Boschgmbh

Delphi Technologies, Inc.

David Michael McGuire

Louis A Rhodes

Ryan A Kuhlman

Jingsheng Yu

David Lynn Ehle

Patrick G Larochelle

Miles A Christmas

Pablo Luis Guarnizo Martinez

Mark C Luscomb

A hill hold decay (HDD) system of a vehicle. The system includes a longitudinal acceleration sensor, a wheel speed sensor, a brake pedal detector, a gas pedal detector, a gear sensor, and a controller. The controller is configured to determine the vehicle has come to a standstill, determine a slope of the ground the vehicle is on, determine a direction of travel of the vehicle is downhill, detect a release of a brake release a brake force applied to a plurality of wheels of the vehicle at a constant first rate, determine a speed of the vehicle has reached a minimum threshold, release the brake force at a second rate as long as the speed of the vehicle is increasing, determine the speed of the vehicle has reached a maximum threshold, and release the brake force.

Hill hold decay

A wrap spring clutch (,) including an input side rotating member (,), an output side rotating member (,), a pole piece (,) containing a cylindrical center bore (,), a coil spring (,) having a first end (,), a second end (,), an outer diameter (,A) and an inner diameter (,B), an end frame (,) and a switch element (,). The cylindrical center bore (,) maintains the outer diameter (,A) of the coil spring (,) thereby minimizing variations in the performance of the wrap spring clutch (,) and reducing the cost and difficulties associated with the manufacture and assembly of known designs.

Wrap spring clutch

Growing community of inventors

Birch Run, MI, United States of America

David Michael McGuire