# US 11,077,842 B2 · Hybrid vehicle drive system and method and idle reduction system and method

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- Number: US 11,077,842 B2
- Document ID: US11077842B2
- Status: Granted
- Kind: B2
- Application number: 16/247,273
- Filed: 2019-01-14
- Published: 2019-05-16
- Granted: 2021-08-03
- Earliest claimed: 2007-07-12
- Assignees: Power Technology Holdings LLC
- Applicants: Power Technology Holdings LLC
- Inventors: Joseph Thomas Dalum; Joseph Mario Ambrosio
- Web page: https://patentgrep.com/patent/US11077842B2

## CPC

- B60W 20/10: Controlling the power contribution of each of the prime movers to meet required power demand
- B60K 6/12: by means of a chargeable fluidic accumulator
- B60K 6/28: characterised by the electric energy storing means, e.g. batteries or capacitors
- B60K 6/442: Series-parallel switching type
- B60K 6/48: Parallel type
- B60K 17/28: characterised by arrangement, location, or type of power take-off
- B60K 25/00: Auxiliary drives (arrangement of tyre-inflating pumps mounted on vehicles B60C23/10)
- B60K 25/06: from the transmission power take-off
- B60L 1/00: Supplying electric power to auxiliary equipment of vehicles (circuit arrangements for charging batteries H02J7/00)
- B60L 1/003: {to auxiliary motors, e.g. for pumps, compressors}
- B60L 50/16: with provision for separate direct mechanical propulsion
- B60L 50/90: using propulsion power supplied by specific means not covered by groups B60L50/10 - B60L50/50, e.g. by direct conversion of thermal nuclear energy into electricity
- B60W 10/06: including control of combustion engines
- B60W 10/08: including control of electric propulsion units, e.g. motors or generators
- B60W 10/10: including control of change-speed gearings
- B60W 10/18: including control of braking systems
- B60W 10/30: including control of auxiliary equipment, e.g. air-conditioning compressors or oil pumps
- B60W 20/00: Control systems specially adapted for hybrid vehicles {(hybrid vehicle design, B60K6/00; electric vehicles B60L)}
- B60W 20/20: Control strategies involving selection of hybrid configuration, e.g. selection between series or parallel configuration
- B60W 30/1888: {Control of power take off [PTO]}
- B60K 1/02: comprising more than one electric motor
- B60K 2025/065: {the transmission being fluidic, e.g. hydraulic}
- B60Y 2200/14: Trucks; Load vehicles, Busses
- Y02T 10/62: Hybrid vehicles
- Y02T 10/70: Energy storage systems for electromobility, e.g. batteries
- Y02T 10/7072: Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
- Y02T 90/16: Information or communication technologies improving the operation of electric vehicles
- Y10S 903/93: Conjoint control of different elements
- Y10T 29/49009: Dynamoelectric machine
- B60W: CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60K: ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60L: PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES (arrangements or mounting of electrical propulsion units or of plural diverse prime-movers for mutual or common propulsion in vehicles B60K1/00, B60K6/20; arrangements or mounting of electrical gearing in vehicles B60K17/12, B60K17/14; preventing wheel slip by reducing power in rail vehicles B61C15/08; dynamo-electric machines H02K; control or regulation of electric motors H02P); SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES (electric coupling devices combined with mechanical couplings of vehicles B60D1/64; electric heating for vehicles B60H1/00); ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL (control or regulation of electric motors H02P); MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60Y: INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y10S: TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A hybrid vehicle drive system for a vehicle includes a first prime mover, a first prime mover driven transmission, and a rechargeable power source. The hybrid vehicle drive system further includes an interface between the transmission and the prime mover for coupling to an electric motor. The electric motor can be in direct or indirect mechanical communication with a hydraulic pump. The electric motor can receive power from the prime mover driven transmission through the interface.

## Claims

### Claim 1

A vehicle power drive system comprising:
an internal combustion engine connected through a transmission to drive wheels of a vehicle, the transmission having a power take off (PTO) and PTO output gear;
a drive system connected to said PTO comprising an electric motor, an energy storage system and a control system, the electric motor being coupled to the PTO; and
wherein the energy storage system is coupled to the electric motor, wherein the electric motor provides power to the energy storage system and adjusts power received by the electric motor in response to one of an anti-lock event, a traction control event, or both the traction control event and the anti-lock event.

### Claim 2 (depends on 1)

The vehicle power drive system as in claim 1, wherein the control system eliminates or reduces the power provided from the electric motor to the energy storage system in response to 4×4 or multi-axle activation.

### Claim 3 (depends on 1)

The vehicle power drive system of claim 1, wherein the energy storage system comprises a battery pack, a battery charger for charging said battery pack using an outside electric power source, and a battery management system.

### Claim 4 (depends on 1)

The vehicle power drive system of claim 1, wherein the control system uses dampening to reduce vibration and gear backlash in the PTO when changing operation of the electric motor.

### Claim 5 (depends on 4)

The vehicle power drive system of claim 4 wherein said electric motor is a permanent magnet motor providing additional torque during an acceleration mode and more regenerative power in a regenerative braking mode.

### Claim 6 (depends on 4)

The vehicle power drive system of claim 4 wherein the electric motor has an auxiliary power take off, and wherein the control system has a park/neutral mode, in which said electric motor recharges a battery pack of said energy storage system, and a fourth, all-electric stationary mode with the engine shut down in which the electric motor operates said auxiliary power take off.

### Claim 7 (depends on 4)

The vehicle power drive system of claim 4, wherein the dampening monitors speed and direction of the electric motor and the PTO output gear and adjusts the direction and speed of the electric motor, thereby creating a closed-loop feedback loop.

### Claim 8

A vehicle drive system for a truck, the vehicle drive system comprising:
an internal combustion truck engine connected through a transmission to drive wheels of the truck, the transmission having a power take off (PTO) having a PTO output;
a drive system connected to the PTO comprising an electric motor/generator, an energy storage system and a control system, the electric motor/generator being coupled to the PTO output; and
wherein the energy storage system is electrically coupled to the electric motor/generator, wherein the electric motor/generator is configured to provide power to the energy storage system and power received by the electric motor/generator from the PTO output is adjusted in response to one of an anti-lock event, a traction control event, or both the traction control event and the anti-lock event.

### Claim 9 (depends on 8)

The vehicle drive system of claim 8, wherein the power received by the electric motor/generator from the PTO output is adjusted by suspending regenerative braking during the one of the anti-lock event, the traction control event, or both the traction control event and the anti-lock event.

### Claim 10 (depends on 8)

The vehicle drive system of claim 8, wherein the power received by the electric motor/generator from the PTO output is adjusted by suspending charging of the energy storage system during the traction control event or antilock braking event.

### Claim 11 (depends on 10)

The vehicle drive system of claim 10, wherein the charging is suspended for a remainder of an ignition cycle.

### Claim 12 (depends on 8)

The vehicle drive system of claim 8, wherein the power received by the electric motor/generator from the PTO is adjusted in response to an advance notice of a shifting event.

### Claim 13 (depends on 8)

The vehicle drive system of claim 8, wherein the control system is configured to use a tuning chart corresponding to each gear of the transmission to control the electric motor/generator in response to a pedal position.

### Claim 14

A vehicle drive system for a truck, the vehicle drive system comprising:
an internal combustion truck engine connected through a transmission to drive wheels of the truck, the transmission having a power take off (PTO) having a PTO output;
a drive system connected to the PTO comprising an electric motor/generator, a battery and a control system, the electric motor/generator being coupled to the PTO output; and
wherein the battery is electrically coupled to the electric motor/generator, wherein the electric motor/generator provides power to the battery and the control system is configured to adjust power received by the electric motor/generator from the PTO output in response to one of an anti-lock event, a traction control event, or both the traction control event and the anti-lock event.

### Claim 15 (depends on 14)

The vehicle drive system of claim 14, wherein the PTO is connected to a torque converter in the transmission.

### Claim 16 (depends on 14)

The vehicle drive system of claim 14, the control system is configured to use a dampening function to reduce vibration in the PTO when switching between supplemental drive power and regenerative braking.

### Claim 17 (depends on 14)

The vehicle drive system of claim 14, wherein the control system is configured to monitor accelerator pedal position, engine throttle position, battery voltage, vehicle speed, or torque request to determine amount and frequency of power being applied to said PTO for maintaining vehicle drivability and optimize overall efficiency, and wherein the transmission is configured to shift through each gear, the transmission is configured to provide a signal over a vehicle network to the control system in order to provide advanced notice of a shift event, wherein the control system is configured to use the signal providing advance notice of a shifting event and based upon the signal and the pedal position can increase or decrease the power provided to the electric motor/generator, allowing for smoother and more efficient shifting, hereby enhancing vehicle ride and reducing fuel consumption or wherein the control system is configured to tune an amount of power provided for launch assist and regenerative braking power applied in a forward and/or reverse direction, wherein further the control system has a tuning chart having a setting for each gear, said settings including pedal position vs. positive or negative torque applied, battery voltage vs. torque provided, torque provided vs. state of charge (SOC), and driver inputs including system disable.

### Claim 18 (depends on 14)

The vehicle drive system of claim 14, further comprising:
hydraulic pump; and
boom equipment responsive to fluid pressurized by the hydraulic pump, wherein the hydraulic pump and the electric motor/generator are disposed on a through shaft coupled to the PTO output, wherein the electric motor/generator is configured to rotate the through shaft to drive the hydraulic pump using energy stored in the battery, wherein the electric motor/generator is between the hydraulic pump and the PTO output.

### Claim 19 (depends on 14)

The vehicle drive system of claim 14, wherein the control system is configured to monitor accelerator pedal position, engine throttle position, battery voltage, vehicle speed, and torque request to determine amount and frequency of power being applied to the PTO for maintaining vehicle drivability and optimize overall efficiency.

### Claim 20 (depends on 19)

The vehicle drive system of claim 19, wherein the transmission is configured to shift through each gear, wherein the transmission is configured to provide a signal over a vehicle network to the control system in order to provide advanced notice of a shift event, wherein the control system is configured to receive the signal providing advance notice of a shifting event and based upon the signal and the pedal position can increase or decrease the power provided to the electric motor/generator, allowing for smoother and more efficient shifting, hereby enhancing vehicle ride and reducing fuel consumption.