US 6,199,528 B1 · Cooling device for internal combustion engines

Abstract

A cooling device for an internal combustion engine includes a brushless DC motor having a housing, an output shaft, a magnet rotor fixedly mounted on the output shaft, and a stator positioned in the housing and having three phase windings which are arranged in the circumferential direction around the magnet rotor, an impeller connected at an outside of the housing to one end of the output shaft of the motor and circulating a cooling liquid through the engine, and a radiator while the output shaft is being rotated. A device can be provided for generating heat at the phase windings for warming-up the cooling liquid if a temperature thereof is below a set value. A device can be provided for stopping the rotation of the output shaft of the motor without interrupting the energization of the motor when a temperature of the cooling liquid is below a set value.

Claims16

Dependent claims

A cooling device for an internal combustion engine comprising:

an electrically operated motor having phase windings, a housing, an output shaft, a magnet rotor fixedly mounted on the output shaft, and a stator positioned in the housing;
an impeller connected at an outside of the housing to one end of the output shaft of the motor for circulating a cooling liquid through the engine and a radiator while the output shaft is being rotated;
means for generating heat at the phase windings for warming-up the cooling liquid if a temperature thereof is below a set value;
and
wherein the cooling device is positioned at a lower side of the engine.

2 more elements

Dependencies are inferred from the claim text.

Cooling device for internal combustion engines

Life of this patent

Cooling device for internal combustion engines

Life of this patent

Abstract

Claims16