公开(公告)号：US11851896B2

公开(公告)日：2023-12-26

申请号：US17106055

申请日：2020-11-27

Applicant: Multiquip Inc.

Inventor： Eric Potter ,  Erick Del Real ,  Kimball Anderson ,  Larry Jake Chapple

IPC: E04F21/24 ,  H02P23/14 ,  H02P29/68 ,  F03D7/02 ,  H02P5/46 ,  G05B11/42

CPC classification number: E04F21/245 ,  H02P23/14 ,  H02P29/68 ,  E04F21/247 ,  E04F21/248 ,  F03D7/02 ,  G05B11/42 ,  H02P5/46

Abstract: A method for thermal management of a power trowel executable by an on-board logic controller allows operation of the trowel in normal mode in which rotor speed is determined by manual control and in which a sensed temperature of the trowel lies below a high temperature setpoint. In response to the sensed temperature exceeding the high temperature setpoint, the controller switches operation of the power trowel from normal mode to thermal management mode in which a maximum rotor speed achievable by manual control is reduced by the controller in incremental steps to allow the trowel to cool. In response to the sensed temperature reaching a low temperature setpoint, the controller increases rotor speed in incremental steps, and returns operation to normal mode when a desired rotor speed is maintained for sufficient time during which the sensed temperature remains below the low temperature setpoint.