Controller and control method for a hybrid electric vehicle powertrain
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B60K-006/365
B60K-006/00
B60W-020/00
출원번호
US-0684868
(2007-03-12)
등록번호
US-7398845
(2008-07-15)
발명자
/ 주소
Kuang,Ming Lang
Ochocinski,Christopher A.
Mack,David
Anthony,Joseph W.
출원인 / 주소
Ford Global Technologies, LLC
대리인 / 주소
Kelley,David B.
인용정보
피인용 횟수 :
6인용 특허 :
21
초록▼
A parallel hybrid electric vehicle powertrain and control method wherein an internal combustion engine and an electric motor system define a split power operating mode, a generator drive mode and a parallel power mode. Provision is made, when the motor is inoperable, for preventing discharge of a ba
A parallel hybrid electric vehicle powertrain and control method wherein an internal combustion engine and an electric motor system define a split power operating mode, a generator drive mode and a parallel power mode. Provision is made, when the motor is inoperable, for preventing discharge of a battery in the electric motor system when the battery state-of-charge is low and for delivering power from the battery when the battery state-of-charge is greater than a predetermined value.
대표청구항▼
What is claimed: 1. A hybrid electric vehicle powertrain comprising an internal combustion engine, a battery, an electric generator, an electric motor and planetary gearing; the planetary gearing including a first gearing element drivably connected to the generator, a second gearing element drivabl
What is claimed: 1. A hybrid electric vehicle powertrain comprising an internal combustion engine, a battery, an electric generator, an electric motor and planetary gearing; the planetary gearing including a first gearing element drivably connected to the generator, a second gearing element drivably connected to a torque output shaft, and a third gearing element drivably connected to the engine; a first brake for preventing rotation of the generator to condition the powertrain for a parallel operating power mode; means for preventing rotation of the third gearing element to condition the powertrain for operation in a generator drive mode; the generator being electrically coupled to the motor and the battery, the motor being drivably connected to the torque output shaft; and a vehicle powertrain controller including means for detecting the state-of-the-charge of the battery and the vehicle speed; the controller being configured to set the powertrain for operation in a parallel drive mode when the state-of-charge is greater than a target value and the vehicle speed is less than a predetermined maximum value; the controller being configured to set the powertrain for operation in a generator drive mode when the state-of-charge is greater than a predetermined high value and the vehicle speed is less than the predetermined maximum value; the controller being configured to set the powertrain for operation in a parallel drive mode when the vehicle speed is greater than the predetermined maximum value and the state-of-charge is greater than a target value, and for operation in a power split drive mode when the vehicle speed is greater than the predetermined maximum value and the state-of-charge is less than the target value. 2. A hybrid electric vehicle powertrain comprising an internal combustion engine, a battery, an electric generator, an electric motor and planetary gearing; the planetary gearing including a first gearing element drivably connected to the generator, a second gearing element drivably connected to a torque output shaft, and a third gearing element drivably connected to the engine; a first brake for preventing rotation of the generator to condition the powertrain for a parallel operating power mode; means for preventing rotation of the third gearing element to condition the powertrain for operation in a generator drive mode; the generator being electrically coupled to the motor and the battery, the motor being drivably connected to the torque output shaft; and a vehicle powertrain controller including means for detecting the state-of-the-charge of the battery and the vehicle speed; the controller being configured to set the powertrain for operation in a parallel drive mode when the state-of-charge is greater than a target value and the vehicle speed is less than a predetermined maximum value; the controller being configured to set the powertrain for operation in a generator drive mode when the state-of-charge is greater than a predetermined high value and the vehicle speed is less than the predetermined maximum value; the controller being configured to set the powertrain for operation in a power split drive mode when the vehicle speed is less than a minimum value below which the engine will stall and the state-of-charge is less than a high value, and for operation in a generator drive mode when the vehicle speed is less than the minimum value and the state-of-charge is greater than the high value. 3. A hybrid electric vehicle powertrain comprising an internal combustion engine, a battery, an electric generator, an electric motor and planetary gearing; the planetary gearing including a first gearing element drivably connected to the generator, a second gearing element drivably connected to a torque output shaft, and a third gearing element drivably connected to the engine; a first brake for preventing rotation of the generator to condition the powertrain for a parallel operating power mode; means for preventing rotation of the third gearing element to condition the powertrain for operation in a generator drive mode; the generator being electrically coupled to the motor and the battery, the motor being drivably connected to the torque output shaft; and a vehicle powertrain controller including means for detecting the state-of-the-charge of the battery and the vehicle speed; the controller being configured to set the powertrain for operation in a parallel drive mode when the state-of-charge is greater than a target value and the vehicle speed is less than a predetermined maximum value; the controller being configured to set the powertrain for operation in a generator drive mode when the state-of-charge is greater than a predetermined high value and the vehicle speed is less than the predetermined maximum value; the controller being configured to set the powertrain for operation in a power split mode when the vehicle speed is less than a minimum below which the engine will stall and the state-of-charge is less than the target value, and for operation in the generator drive mode when the vehicle speed is less than the minimum value and the state-of-charge is less than the target value. 4. The hybrid electric vehicle powertrain set forth in claim 3 wherein the controller is configured to operate in a power split mode when the vehicle speed is less than the minimum value and the state-of-charge is less than a predetermined high value. 5. The hybrid electric vehicle powertrain set forth in claim 4 wherein the planetary gearing establishes multiple power flow paths from the engine to the torque output shaft, one power flow path being mechanical as the generator establishes a reaction torque on the first gearing element, another power flow path being electromechanical as electrical power is transmitted from the generator to the motor, whereby the powertrain is conditioned for operation in a power split drive mode. 6. The hybrid electric vehicle powertrain set forth in claim 3 wherein the planetary gearing establishes multiple power flow paths from the engine to the torque output shaft, one power flow path being mechanical as the generator establishes a reaction torque on the first gearing element, another power flow path being electromechanical as electrical power is transmitted from the generator to the motor, whereby the powertrain is conditioned for operation in a power split drive mode.
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이 특허에 인용된 특허 (21)
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Sakai Shoji,JPX ; Asa Hironori,JPX ; Onimaru Sadahisa,JPX ; Inagaki Mitsuo,JPX, Battery charge control system for a hybrid vehicle driven by an electric motor and an internal combustion engine.
Jerker Lennevi SE, Method and arrangement in a hybrid vehicle for improving battery state-of-charge control and minimizing driver perceptible disturbances.
Anders Lasson SE; Jerker Lennevi SE, Method and arrangement in a hybrid vehicle for matching engine and generator torques at times of engagement and disengagement.
Coates, Calvin Edward; Melichar, Robert John, Method of and apparatus for controlling charging and/or discharging of a battery for a hybrid electric vehicle.
Okubo, Shunsuke; Kuang, Ming Lang; Brigham, David Richens; Tamor, Michael Alan, Charge depleting energy management strategy for plug-in hybrid electric vehicles.
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