US 11,376,958 B1 · Electrified military vehicle

Abstract

A front end accessory drive (FEAD) for a military vehicle. The FEAD includes a first belt, a second belt, multiple accessories, an electric motor-generator, at least one other accessory, and a sprag clutch. The accessories and the electric motor-generator are coupled with the first belt. The at least one other accessory, the first belt, and the second belt are coupled with the sprag clutch. The second belt is configured to couple with an output shaft of an engine of the military vehicle and be driven by the output shaft of the engine to drive the sprag clutch. The sprag clutch is thereby configured to drive the at least one other accessory and the first belt, and the first belt is thereby configured to drive the plurality of accessories, and the electric motor-generator.

Claims19

Dependent claims

A front end accessory drive (FEAD) for a military vehicle, the FEAD comprising:

a first belt;
a second belt;
a plurality of accessories;
an electric motor-generator;
at least one other accessory;
and
a sprag clutch;
wherein the plurality of accessories and the electric motor-generator are coupled with the first belt;
wherein the at least one other accessory, the first belt, and the second belt are coupled with the sprag clutch;
and
wherein the second belt is configured to couple with an output shaft of an engine of the military vehicle, the second belt configured to be driven by the output shaft of the engine and drive the sprag clutch, the sprag clutch thereby configured to drive the at least one other accessory and the first belt, the first belt thereby configured to drive the plurality of accessories, and the electric motor-generator;
further comprising a frame plate interposed between the first belt and the second belt, wherein the first belt is positioned in front of the frame plate and the second belt is positioned behind the frame plate.

9 more elements

A front end accessory drive (FEAD) for a military vehicle, the FEAD comprising:

a frame plate;
a first belt positioned in front of the frame plate;
an air compressor, a clutched fan assembly, and an electric motor-generator coupled with the first belt;
a second belt positioned behind the frame plate;
wherein the frame plate is interposed between the first belt and the second belt;
a hydraulic pump;
and
a sprag clutch;
wherein the hydraulic pump, the first belt, and the second belt are coupled with the sprag clutch;
wherein the second belt is configured to couple with an output shaft of an engine of the military vehicle, the second belt configured to be driven by the output shaft of the engine and drive the sprag clutch, the sprag clutch thereby configured to drive the hydraulic pump and the first belt, the first belt thereby configured to drive the air compressor, the clutched fan assembly, and the electric motor-generator;
and
wherein the FEAD is operable in a first mode in which the engine is a primary driver of the FEAD and a second mode in which the electric motor-generator is the primary driver of the FEAD.

9 more elements

A front end accessory drive (FEAD) for a military vehicle, the FEAD comprising:

a frame plate;
a first belt positioned in front of the frame plate;
an air compressor, a fan, and an electric motor-generator coupled with the first belt;
a second belt positioned behind the frame plate;
wherein the frame plate is interposed between the first belt and the second belt;
a hydraulic pump;
a sprag clutch comprising a first portion, a second portion, and a plurality of sprags between the first portion and the second portion, wherein the second belt is coupled with the second portion, and both the first belt and the hydraulic pump are coupled with the first portion, the sprags configured to (i) engage the first portion and the second portion to limit relative rotation between the first portion and the second portion in a first direction of relative rotation and (ii) allow relative rotation between the first portion and the second portion in a second direction of relative rotation opposite the first direction of relative rotation;
an air conditioning (AC) compressor and an AC electric motor, the AC electric motor configured to consume electrical energy provided by an electrical energy system of the military vehicle and drive the AC compressor;
and
a lubricant pump configured to consume electrical energy from the electrical energy system of the military vehicle to provide lubricant to at least one of the air compressor, the clutched fan, the hydraulic pump, or the AC compressor;
wherein the second belt is configured to couple with an output shaft of an engine of the military vehicle, the second belt configured to be driven by the output shaft of the engine and drive the sprag clutch, the sprag clutch thereby configured to drive the hydraulic pump and the first belt, the first belt thereby configured to drive the air compressor, the fan, and the electric motor-generator;
wherein in a first mode (i) the engine functions as a primary driver of the FEAD and drives the second belt, the second belt thereby driving the sprag clutch, the sprag clutch thereby driving the hydraulic pump and the first belt, the first belt thereby driving the fan, the air compressor, and the electric motor-generator and (ii) the electric motor-generator functions as a generator to generate electrical energy and provides the generated electrical energy to at least one of (a) the electrical energy system for storage or (b) an electrical component of the military vehicle for use by the electrical component;
wherein in a second mode (i) the electric motor-generator functions as the primary driver of the FEAD and drives the first belt, the first belt thereby driving the fan, the air compressor, and the sprag clutch, the sprag clutch thereby driving the hydraulic pump, (ii) the electric motor-generator consumes electrical energy provided by the electrical energy system of the military vehicle, and (iii) the second belt is not driven by the sprag clutch;
wherein in the first mode, the first portion and the second portion are engaged with each other through the sprags;
and
wherein in the second mode, the first portion and the second portion are not engaged with each other through the sprags.

13 more elements

Dependencies are inferred from the claim text.

Electrified military vehicle

Life of this patent

Electrified military vehicle

Life of this patent

Abstract

Claims19