Power output apparatus and method of controlling the same
First Claim
1. A method of controlling a power output apparatus, said method comprising the steps of:
- (a) providing (1) an engine having an output shaft;
(2) a first motor having a rotating shaft, said first motor inputting and outputting power to and from said rotating shaft;
(3) a second motor for inputting and outputting power to and from a drive shaft; and
(4) a three shaft-type power input/output means having three shafts respectively linked with said drive shaft, including said output shaft and said rotating shaft as two shafts of said three shafts, when powers are input to and output from any two shafts among said three shafts, said power input/output means inputting and outputting power, which is determined according to the input and output powers, to and from a residual one shaft of said three shafts; and
(5) storage battery means being discharged to supply electric power required for driving said second motor;
(b) specifying a target power to be output to said drive shaft, based on an instruction of a user;
(c) when the target power specified in said step (b) exceeds a predetermined power controlling operation of said engine, based on the predetermined power;
(d) driving and controlling said first motor, in order to enable the power output from said engine controlled in said step (c) to be subjected to torque conversion by said three shaft-type power input/output means, said first motor, and said second motor and to be output to said drive shaft as the predetermined power; and
(e) driving and controlling said second motor, in order to make the power output from said engine equal to a difference between the target power and power output via said three shaft-type power input/output means to said drive shaft.
1 Assignment
0 Petitions
Accused Products
Abstract
A power output apparatus includes a planetary gear having a planetary carrier, a sun gear, and a ring gear. A crankshaft of an engine is mechanically linked with the planetary carrier, a first motor with the sun gear, and a second motor with the ring gear. A controller drives the second motor with electric power regenerated by the first motor or drives the first motor with electric power regenerated by the second motor, based on a gear ratio of the sun gear to the ring gear of the planetary gear, thereby enabling the power output from the engine to be converted to a desired power and output to a power transmission gear mechanically connected with the ring gear. The engine may be driven at any driving point that can output energy identical with the energy output to the ring gear. This structure allows the engine to be driven at a desired driving point of highest possible efficiency, thereby enhancing the efficiency of the whole apparatus.
66 Citations
45 Claims
-
1. A method of controlling a power output apparatus, said method comprising the steps of:
-
(a) providing (1) an engine having an output shaft;
(2) a first motor having a rotating shaft, said first motor inputting and outputting power to and from said rotating shaft;
(3) a second motor for inputting and outputting power to and from a drive shaft; and
(4) a three shaft-type power input/output means having three shafts respectively linked with said drive shaft, including said output shaft and said rotating shaft as two shafts of said three shafts, when powers are input to and output from any two shafts among said three shafts, said power input/output means inputting and outputting power, which is determined according to the input and output powers, to and from a residual one shaft of said three shafts; and
(5) storage battery means being discharged to supply electric power required for driving said second motor;(b) specifying a target power to be output to said drive shaft, based on an instruction of a user; (c) when the target power specified in said step (b) exceeds a predetermined power controlling operation of said engine, based on the predetermined power; (d) driving and controlling said first motor, in order to enable the power output from said engine controlled in said step (c) to be subjected to torque conversion by said three shaft-type power input/output means, said first motor, and said second motor and to be output to said drive shaft as the predetermined power; and (e) driving and controlling said second motor, in order to make the power output from said engine equal to a difference between the target power and power output via said three shaft-type power input/output means to said drive shaft.
-
-
2. A power output apparatus for outputting power to a drive shaft, said power output apparatus comprising:
-
an engine having an output shaft; a first motor having a rotating shaft, said first motor inputting and outputting power to and from said rotating shaft; a second motor inputting and outputting power to and from said drive shaft; a three shaft-type power input/output means having three shafts respectively linked with said drive shaft, including said output shaft and said rotating shaft as two shafts of said three shafts, when powers are input to and output from any two shafts among said three shafts, said power input/output means inputting and outputting power, which is determined according to the input and output powers, to and from a residual one shaft of said three shafts; target power setting means for setting a target power to be output to said drive shaft; engine operation control means for controlling operation of said engine, based on the target power set by said target power setting means and an operating condition setting unit that specifies an operating condition of the engine which enables the engine to operate with the highest possible engine efficiency based on a predetermined relationship between operating condition and engine efficiency; and power control means for driving and controlling said first motor and said second motor, in order to enable power output from said engine to be subjected to torque conversion by said three shaft-type power input/output means, said first motor, and said second motor and to be output to said drive shaft as the target power. - View Dependent Claims (4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 27)
-
-
3. A power output apparatus for outputting power to a drive shaft, said power output apparatus comprising:
-
an engine having an output shaft; a first motor having a rotating shaft, said first motor inputting and outputting power to and from said rotating shaft; a second motor inputting and outputting power to and from said drive shaft; a three shaft-type power input/output means having three shafts respectively linked with said drive shaft, including said output shaft and said rotating shaft as two shafts of said three shafts, when powers are input to and output from any two shafts among said three shafts, said power input/output means inputting and outputting power, which is determined according to the input and output powers, to and from a residual one shaft of said three shafts; target power setting means for setting a target power to be output to said drive shaft; engine operation control means for controlling operation of said engine, based on the target power set by said target power setting means and an operating condition setting unit that specifies an operating condition of the engine which enables the engine to operate with the highest possible engine efficiency, based on a predetermined relationship between operating condition and engine efficiency; and power control for driving and controlling said first motor and said second motor, in order to enable power output from said engine to be subjected to torque conversion by said three shaft-type power input/output means, said first motor, and said second motor and to be output to said drive shaft, wherein said power control means includes means for driving and controlling said first motor, in order to enable part of the power output from said engine to be regenerated as electric power by said first motor via said three shaft-type power input/output means and means for driving and controlling said second motor, in order to enable power to be output from said second motor to said drive shaft by utilizing the electric power regenerated by said first motor.
-
-
16. A method of controlling a power output apparatus, said method comprising the steps of:
-
(a) providing (1) an engine having an output shaft;
(2) a first motor having a rotating shaft, said first motor inputting and outputting power to and from said rotating shaft;
(3) a second motor for inputting and outputting power to and from a drive shaft; and
(4) a three shaft-type power input/output means having three shafts respectively linked with said drive shaft, including said output shaft and said rotating shaft as two shafts of said three shafts when powers are input to and output from any two shafts among said three shafts, said power input/output means inputting and outputting power, which is determined according to the input and output powers, to and from a residual one shaft of said three shafts; and
(5) storage battery means being charged with electric power regenerated by said second motor and being discharged to supply electric power required for driving said second motor;(b) specifying a target power to be output to said drive shaft, based on an instruction of a user; (c) controlling operation of said engine, based on the target power specified in said step (by and a revolving speed of said drive shaft; (d) keeping said first motor in a lock-up state to prevent rotation of said rotating shaft; and (e) driving and controlling said second motor, in order to enable the target power to be output to said drive shaft by utilizing power output from said engine and power input to and output from said second motor.
-
-
17. A power output apparatus for outputting power to a drive shaft, said power output apparatus comprising:
-
an engine having an output shaft; a first motor having a rotating shaft, said first motor inputting and outputting power to and from said rotating shaft; a second motor inputting and outputting power to and from said output shaft of said engine; a three shaft-type power input/output means having three shafts respectively linked with said drive shaft, including said output shaft and said rotating shaft as two shafts of said three shafts, when powers are input to and output from any two shafts among said three shafts, said power input/output means inputting and outputting power, which is determined according to the input and output powers, to and from a residual one shaft of said three shafts; power control means for driving and controlling said first motor and said second motor, in order to enable power output from said engine to be subjected to torque conversion by said three shaft-type power input/output means, said first motor, and said second motor and to be output to said drive shaft; target power setting means for setting a target power to be output to said drive shaft; and engine operation control means for controlling operation of said engine, based on the target power set by said target power setting means and an operating condition setting unit that specifies an operating condition of the engine which enables the engine to operate with the highest possible engine efficiency, based on a predetermined relationship between operating condition and engine efficiency, wherein said power control means comprises means for enabling the power output from said engine to be subjected to torque conversion by said three shaft-type power input/output means, said first motor, and said second motor and to be output to said drive shaft as the target power. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 28, 29, 30)
-
-
31. A power output apparatus for outputting power to a drive shaft, said power output apparatus comprising:
-
an engine having an output shaft; a motor having a rotating shaft, said motor inputting and outputting power to and from said rotating shaft; three shaft-type power input/output means having three shafts respectively linked with said drive shaft, including said output shaft and said rotating shaft as two shafts of said three shafts, when power are input to and output from any two shafts among said three shafts, said power input/output means inputting and outputting power, which is determined according to the input and output powers, to and from a residual one shaft of said three shafts; target power setting means for setting a target power to be output to said drive shaft; engine operation control means for controlling operation of said engine, based on the target power set by said target power setting means and an operating condition setting unit that specifies an operating condition of the engine which enables the engine to operate with the highest possible engine efficiency, based on a predetermined relationship between operating condition and engine efficiency; and lock-up state control means for keeping said motor in a lock-up state to prevent rotation of said rotating shaft, in response to a predetermined driving requirement. - View Dependent Claims (32, 33)
-
-
34. A power output apparatus for outputting power to a drive shaft, said power output apparatus comprising:
-
an engine having an output shaft; a first motor having a first rotating shaft that is coaxial with said output shaft, said first motor inputting and outputting power to and from said first rotating shaft; a second motor having a second rotating shaft that is coaxial with said output shaft, said second motor inputting and outputting power to and from said second rotating shaft; a three shaft-type power input/output means having three shafts respectively linked with said drive shaft, including said output shaft, said first rotating shaft, and said second rotating shaft as said three shafts, when powers are input to and output from any two shafts among said three shafts, said power input/output means inputting and outputting power, which is determined according to the input and output powers, to and from a residual one shaft of said three shafts; and power transmission means arranged between said engine and said second motor and linked with said second rotating shaft and said drive shaft for transmitting power of said second rotating shaft to said drive shaft. - View Dependent Claims (35, 36, 37)
-
-
38. A power output apparatus for outputting power to a drive shaft, said power output apparatus comprising:
-
an engine having an output shaft; a first motor having a first rotating shaft that is coaxial with said output shaft, said first motor inputting and outputting power to and from said first rotating shaft; a second motor for inputting and outputting power to and from said output shaft of said engine; a three shaft-type power input/output means having three shafts respectively linked with said drive shaft, including said output shaft, said first rotating shaft, and a second rotating shaft of said second motor as said three shafts, when powers are input to and output from any two shafts among said three shafts, said power input/output means inputting and outputting power, which is determined according to the input and output powers, to and from a residual one shaft of said three shafts; and power transmission means arranged between said engine and said first motor and linked with said second rotating shaft and said drive shaft for transmitting power of said second rotating shaft to said drive shaft. - View Dependent Claims (39, 40, 41)
-
-
42. A method of controlling a power output apparatus, said method comprising the steps of:
-
(a) providing (1) an engine having an output shaft;
(2) a first motor having a rotating shaft, said first motor inputting and outputting power to and from said rotating shaft;
(3) a second motor for inputting and outputting power to and from a drive shaft; and
(4) a three shaft-type power input/output means having three shafts respectively linked with said drive shaft, including said output shaft and said rotating shaft as two shafts of said three shafts, when powers are input to and output from any two shafts among said three shafts, said power input/output means inputting and outputting power, which is determined according to the input and output powers, to and from a residual one shaft of said three shafts;(b) specifying a target power to be output to said drive shaft, based on an instruction of a user; (c) controlling operation of said engines, based on the target power specified in said step (b); and (d) driving and controlling said first motor and said second motor, in order to enable the power output from said engine controlled in said step (c) to be subjected to torque conversion by said three shaft-type power input/output means, said first motor, and said second motor and to be output to said drive shaft as the target power.
-
-
43. A method of controlling a power output apparatus, said method comprising the steps of:
-
(a) providing (1) an engine having an output shaft;
(2) a first motor having a rotating shaft, said first motor inputting and outputting power to and from said rotating shaft;
(3) a second motor for inputting and outputting power to and from a drive shaft; and
(4) a three shaft-type power input/output means having three shafts respectively linked with said drive shaft, including said output shaft and said rotating shaft as two shafts of said three shafts, when powers are input to and output from any two shafts among said three shafts, said power input/output means inputting and outputting power, which is determined according to the input and output powers, to and from a residual one shaft of said three shafts; and
(5) storage battery means being charged with electric power regenerated by said first motor, being charged with electric power regenerated by said second motor, being discharged to supply electric power required for driving said first motor, and being discharged to supply electric power required for driving said second motor;(b) specifying a target power to be output to said drive shaft, based on an instruction of a user; (c) controlling operation of said engine, based on the target power specified in said step (b) and a charge state of said storage battery means; and (d) driving and controlling said first motor and said second motor, in order to enable the power output from said engine controlled in said step (c) and electric power stored into and discharged from said storage battery means to be subjected to torque conversion by said three shaft-type power input/output means, said first motor, and said second motor and to be output to said drive shaft as the target power.
-
-
44. A method of controlling a power output apparatus said method comprising the steps of:
-
(a) providing (1) an engine having an output shaft;
(2) a first motor having a rotating shafts said first motor inputting and outputting power to and from said rotating shaft;
(3) a second motor for inputting and outputting power to and from a drive shaft; and
(4) a three shaft-type power input/output means having three shafts respectively linked with said drive shaft, including said output shaft and said rotating shaft as two shafts of said three shafts, when powers are input to and output from any two shafts among said three shafts, said power input/output means inputting and outputting power, which is determined according to the input and output powers, to and from a residual one shaft of said three shafts;(b) specifying a target power to be output to said drive shaft, based on an instruction of a user; (c) setting power input to and output from said engine, power input to and output from said first motor, and power input to and output from said second motor, based on the target power specified in said step (b); and (d) driving and controlling said engine, said first motor, and said second motor, in order to enable the powers set in said step (c) to be respectively input to and output from said engine, said first motor, and said second motor.
-
-
45. A method of controlling a power output apparatus, said method comprising the steps of:
-
(a) providing (1) an engine having an output shaft;
(2) a first motor having a rotating shaft, said first motor inputting and outputting power to and from said rotating shaft;
(3) a second motor for inputting and outputting power to and from a drive shaft; and
(4) a three shaft-type power input/output means having three shafts respectively linked with said drive shaft, including said output shaft and said rotating shaft as two shafts of said three shafts, when powers are input to and output from any two shafts among said three shafts, said power input/output means inputting and outputting power, which is determined according to the input and output powers, to and from a residual one shaft of said three shafts; and
(5) storage battery means being discharged to supply electric power required for driving said second motor;(b) specifying a target power to be output to said drive shaft, based on an instruction of a user; and (c) stopping operation of said engine and driving and controlling said second motor in order to enable the target power to be output from said second motor to said drive shaft with electric power stored in said storage battery means, in response to a predetermined driving requirement.
-
Specification