Power output apparatus, method of controlling power output apparatus, and driving system with power output apparatus incorporated therein
First Claim
1. A power output apparatus for outputting power to a drive shaft, said power output apparatus, comprising:
- an engine having an output shaft;
energy adjustment means having a first shaft connected with said output shaft of said engine and a second shaft connected with said drive shaft, said energy adjustment means adjusting a difference in energy between power one of power input into and power output from said first shaft and power one of power input into and power output from said second shaft by regulating input and output of corresponding electrical energy ;
a drive motor, wherein power is transmitted between said drive motor and said drive shaft;
target power setting means for setting a target power output to said drive shaft;
driving state setting means for setting a target driving state of said engine that outputs energy corresponding to the target power set by said target power setting means, based on a predetermined condition; and
control means for controlling said engine, so as to enable said engine to be driven in the target driving state set by said driving state setting means, and for controlling said energy adjustment means and said drive motor, so as to enable power output from said engine to be subjected to torque conversion and output as the target power to said drive shaft.
0 Assignments
0 Petitions
Accused Products
Abstract
A power output apparatus 20 includes a clutch motor, an assist motor, and a controller. The clutch motor and the assist motor are controlled by the controller to enable the power output from an engine to a crankshaft 56, and expressed as the product of its revolving speed and torque, to be converted to the power expressed as the product of a revolving speed and a torque of a drive shaft and to be output to the drive shaft. The engine can be driven at an arbitrary driving point defined by a revolving speed and a torque, as long as the energy or power output to the crankshaft is identical. A desired driving point that attains the highest possible efficiency with respect to each amount of output energy is determined in advance. In order to allow the engine to be driven at the desired driving point, the controller controls the clutch motor and the assist motor as well as the fuel injection and the throttle valve position. Such control procedures of the power output apparatus enhance the energy efficiency of the whole power output apparatus.
-
Citations
96 Claims
-
1. A power output apparatus for outputting power to a drive shaft, said power output apparatus, comprising:
-
an engine having an output shaft;
energy adjustment means having a first shaft connected with said output shaft of said engine and a second shaft connected with said drive shaft, said energy adjustment means adjusting a difference in energy between power one of power input into and power output from said first shaft and power one of power input into and power output from said second shaft by regulating input and output of corresponding electrical energy ;
a drive motor, wherein power is transmitted between said drive motor and said drive shaft;
target power setting means for setting a target power output to said drive shaft;
driving state setting means for setting a target driving state of said engine that outputs energy corresponding to the target power set by said target power setting means, based on a predetermined condition; and
control means for controlling said engine, so as to enable said engine to be driven in the target driving state set by said driving state setting means, and for controlling said energy adjustment means and said drive motor, so as to enable power output from said engine to be subjected to torque conversion and output as the target power to said drive shaft. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 91)
-
-
17. A power output apparatus for outputting power to a drive shaft, said power output apparatus comprising:
-
an engine having an output shaft;
energy adjustment means having a first shaft connected with said output shaft of said engine and a second shaft connected with said drive shaft, said energy adjustment means adjusting a difference in energy between power one of power input into and power output from said first shaft and power one of power input into and power output from said second shaft by regulating input and output of corresponding electrical energy ;
a drive motor, wherein power is transmitted between said drive motor and said output shaft of said engine;
target power setting means for setting a target power output to said drive shaft;
driving state setting means for setting a target driving state of said engine that outputs energy corresponding to the target power set by said target power setting means, based on a predetermined condition; and
control means for controlling said engine, so as to enable said engine to be driven in the target driving state set by said driving state setting means, and for controlling said energy adjustment means and said drive motor, so as to enable power output from said engine to be subjected to torque conversion and output as the target power to said drive shaft. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 92)
-
-
28. A driving system, comprising:
-
an engine having an output shaft;
energy adjustment means having a first shaft connected with said output shaft of said engine and a second shaft connected with a drive shaft of said driving system, said energy adjustment means adjusting a difference in energy between power one of power input into and power output from said first shaft and power one of power input into and power output from said second shaft by regulating input and output of corresponding electrical energy;
a drive motor, wherein power is transmitted between said drive motor and said drive shaft;
target power setting means for setting a target power output to said drive shaft;
driving state setting means for setting a target driving state of said engine that outputs energy corresponding to the target power set by said target power setting means, based on a first condition for enhancing an energy efficiency of said engine that outputs energy corresponding to the target power and a second condition for making a vibration due to an operation of said engine out of a range of resonance frequency of said driving system; and
control means for controlling said engine, so as to enable said engine to be driven in the target driving state set by said driving state setting means, and for controlling said energy adjustment means and said drive motor, so as to enable power output from said engine to be subjected to torque conversion and output as the target power to said drive shaft. - View Dependent Claims (29, 30, 31, 93)
-
-
32. A driving system, comprising:
-
an engine having an output shaft;
energy adjustment means having a first shaft connected with said output shaft of said engine and a second shaft connected with a drive shaft of said driving system, said energy adjustment means adjusting a difference in energy between power one of power input into and power output from said first shaft and power one of power input into and power output from said second shaft by regulating input and output of corresponding electrical energy ;
a drive motor, wherein power is transmitted between said drive motor and said output shaft of said engine;
target power setting means for setting a target power output to said drive shaft;
driving state setting means for setting a target driving state of said engine that outputs energy corresponding to the target power set by said target power setting means, based on a first condition for enhancing an energy efficiency of said engine that outputs energy corresponding to the target power and a second condition for making a vibration due to an operation of said engine out of a range of resonance frequency of said driving system; and
control means for controlling said engine, so as to enable said engine to be driven in the target driving state set by said driving state setting means, and for controlling said energy adjustment means and said drive motor, so as to enable power output from said engine to be subjected to torque conversion and output as the target power to said drive shaft. - View Dependent Claims (33, 34, 35, 94)
-
-
36. A method of controlling a power output apparatus for outputting power to a drive shaft, said method comprising the steps of:
-
(a) providing an engine having an output shaft;
energy adjustment means having a first shaft connected with said output shaft of said engine and a second shaft connected with said drive shaft, said energy adjustment means adjusting a difference in energy between power one of power input into and power output from said first shaft and power one of power input into and power output from said second shaft by regulating input and output of corresponding electrical energy ; and
a drive motor, wherein power is transmitted between said drive motor and said drive shaft;
(b) setting a target power output to said drive shaft;
(c) setting a target driving state of said engine that outputs energy corresponding to the target power set in said step (b), based on a specific condition of selecting a specific driving point that attains a highest possible efficiency among a plurality of available driving points of said engine that outputs energy corresponding to the target power; and
(d) controlling said engine, so as to enable said engine to be driven in the target driving state set in said step (c), and for controlling said energy adjustment means and said drive motor, so as to enable power output from said engine to be subjected to torque conversion and output as the target power to said drive shaft. - View Dependent Claims (37, 38)
-
-
39. A method of controlling a power output apparatus for outputting power to a drive shaft, said method comprising the steps of:
-
(a) providing an engine having an output shaft;
energy adjustment means having a first shaft connected with said output shaft of said engine and a second shaft connected with said drive shaft, said energy adjustment means adjusting a difference in energy between power one of power input into and power output from said first shaft and power one of power input into and power output from said second shaft by regulating input and output of corresponding electrical energy ; and
a drive motor, wherein power is transmitted between said drive motor and said drive shaft;
(b) setting a target power output to said drive shaft;
(c) setting a target driving state of said engine that outputs energy corresponding to the target power set in said step (b), based on a specific condition of selecting a specific driving point that attains a highest possible efficiency among a plurality of available driving points of said engine that outputs energy corresponding to the target power, said comprehensive highest possible efficiency being calculated by multiplying an energy efficiency of said engine by a transmission efficiency of said energy adjustment means and said drive motor when the power output from said engine is subject to torque conversion and output to said drive shaft; and
(d) controlling said engine, so as to enable said engine to be driven in the target driving state set in said step (c), and for controlling said energy adjustment means and said drive motor, so as to enable power output from said engine to be subjected to torque conversion and output as the target power to said drive shaft. - View Dependent Claims (40, 41)
-
-
42. A power output apparatus for outputting power to a drive shaft, said power output apparatus comprising:
-
an engine having an output shaft;
an energy adjustment system having a first shaft connected with said output shaft of said engine and a second shaft connected with said drive shaft, said energy adjustment system adjusting a difference in energy between one of power input into and power output from said first shaft and one of power input into and power output from said second shaft;
a drive motor, wherein power is transmitted between said drive motor and said drive shaft;
an accelerator used to set a target power output to said drive shaft;
a controller that sets a target driving state of said engine to output energy corresponding to the target power set by said accelerator, based on a predetermined condition;
that controls said engine, so as to enable said engine to be driven in the target driving state; and
that controls said energy adjustment system and said drive motor, so as to enable power output from said engine to be subjected to torque conversion and output as the target power to said drive shaft. - View Dependent Claims (43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59)
-
-
60. A power output apparatus for outputting power to a drive shaft, said power output apparatus comprising:
-
an engine having an output shaft;
an energy adjustment system having a first shaft connected with said output shaft of said engine and a second shaft connected with said drive shaft, said energy adjustment system adjusting a difference in energy between one of power input into and power output from said first shaft and one of power input into and power output from said second shaft;
a drive motor, wherein power is transmitted between said drive motor and said output shaft of said engine;
an accelerator used to set a target power output to said drive shaft;
a controller that sets a target driving state of said engine to output energy corresponding to the target power set by said accelerator, based on a predetermined condition;
that controls said engine, so as to enable said engine to be driven in the target driving state; and
that controls said energy adjustment system and said drive motor, so as to enable power output from said engine to be subjected to torque conversion and output as the target power to said drive shaft. - View Dependent Claims (61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72)
-
-
73. A driving system, comprising:
-
an engine having an output shaft;
an energy adjustment system having a first shaft connected with said output shaft of said engine and a second shaft connected with a drive shaft of said driving system, said energy adjustment system adjusting a difference in energy between one of power input into and power output from said first shaft and one of power input into and power output from said second shaft by regulating input and output of corresponding electrical energy;
a drive motor, wherein power is transmitted between said drive motor and said drive shaft;
an accelerator used to set a target power output to said drive shaft;
a controller that sets a target driving state of said engine to output energy corresponding to the target power set by said accelerator, based on a first condition for enhancing an energy efficiency of said engine that outputs energy corresponding to the target power and a second condition for making a vibration due to an operation of said engine out of a range of resonance frequency of said driving system;
that controls said engine, so as to enable said engine to be driven in the target driving state; and
that controls said energy adjustment system and said drive motor, so as to enable power output from said engine to be subjected to torque conversion and output as the target power to said drive shaft. - View Dependent Claims (74, 75, 76, 77)
-
-
78. A driving system, comprising:
-
an engine having an output shaft;
an energy adjustment system having a first shaft connected with said output shaft of said engine and a second shaft connected with a drive shaft of said driving system, said energy adjustment system adjusting a difference in energy between one of power input into and power output from said first shaft and one of power input into and power output from said second shaft;
a drive motor, wherein power is transmitted between said drive motor and said output shaft of said engine;
an accelerator used to set a target power output to said drive shaft;
a controller that sets a target driving state of said engine to output energy corresponding to the target power set by said accelerator, based on a first condition for enhancing an energy efficiency of said engine that outputs energy corresponding to the target power and a second condition for making a vibration due to an operation of said engine out of a range of resonance frequency of said driving system;
that controls said engine, so as to enable said engine to be driven in the target driving state; and
that controls said energy adjustment system and said drive motor, so as to enable power output from said engine to be subjected to torque conversion and output as the target power to said drive shaft. - View Dependent Claims (79, 80, 81, 82)
-
-
83. A method of controlling a power output apparatus for outputting power to a drive shaft, said method comprising the steps of:
-
(a) providing an engine having an output shaft;
an energy adjustment system having a first shaft connected with said output shaft of said engine and a second shaft connected with said drive shaft said energy adjustment system adjusting a difference in energy between one of power input into and power output from said first shaft and one of power input into and power output from said second shaft; and
a drive motor, wherein power is transmitted between said drive motor and said drive shaft;
(b) setting a target power output to said drive shaft;
(c) setting a target driving state of said engine to output energy corresponding to the target power set in said step (b), based on a specific condition of selecting a specific driving point that attains a highest possible efficiency among a plurality of available driving points of said engine that outputs energy corresponding to the target power; and
(d) controlling said engine, so as to enable said engine to be driven in the target driving state set in said step (c), and controlling said energy adjustment system and said drive motor, so as to enable power output from said engine to be subjected to torque conversion and output as the target power to said drive shaft. - View Dependent Claims (84, 85)
-
-
86. A method of controlling a power output apparatus for outputting power to a drive shaft, said method comprising the steps of:
-
(a) providing an engine having an output shaft;
an energy adjustment system having a first shaft connected with said output shaft of said engine and a second shaft connected with said drive shaft, said energy adjustment system adjusting a difference in energy between one of power input into and power output from said first shaft and one of power input into and power output from said second shaft; and
a drive motor, wherein power is transmitted between said drive motor and said drive shaft;
(b) setting a target power output to said drive shaft;
(c) setting a target driving state of said engine to output energy corresponding to the target power set in said step (b), based on a specific condition of selecting a specific driving point that attains a highest possible efficiency among a plurality of available driving points of said engine that outputs energy corresponding to the target power, said highest possible efficiency being calculated by multiplying an energy efficiency of said engine by a transmission efficiency of said energy adjustment system and said drive motor when the power output from said engine is subject to torque conversion and output to said drive shaft; and
(d) controlling said engine, so as to enable said engine to be driven in the target driving state set in said step (c), and controlling said energy adjustment system, and said drive motor, so as to enable power output from said engine to be subjected to torque conversion and output as the target power to said drive shaft. - View Dependent Claims (87, 88)
-
-
89. A power output apparatus for outputting power to a drive shaft, said power output apparatus comprising:
-
an engine having an output shaft;
an energy adjustment system having a twin-rotor motor, said twin-rotor motor comprising a first rotor connected with said output shaft of said engine and a second rotor connected with said drive shaft, said energy adjustment system adjusting a difference in energy between one of power input into and power output from said first rotor and one of power input into and power output from said second rotor by regulating input and output of corresponding electrical energy;
a drive motor, wherein power is transmitted between said drive motor and said drive shaft;
an accelerator used to set a target power output to said drive shaft;
a controller that sets a target driving state of said engine to output energy corresponding to the target power set by said accelerator, based on a predetermined condition;
that controls said engine, so as to enable said engine to be driven in the target driving state; and
that controls said energy adjustment system and said drive motor, so as to enable power output from said engine to be subjected to torque conversion and output as the target power to said drive shaft.
-
-
90. A power output apparatus for outputting power to a drive shaft, said power output apparatus comprising:
-
an engine having an output shaft;
an energy adjustment system having a twin-rotor motor, said twin-rotor motor comprising a first rotor connected with said output shaft of said engine and a second rotor connected with said drive shaft, said energy adjustment system adjusting a difference in energy between one of power input into and power output from said first rotor and one of power input into and power output from said second rotor by regulating input and output of corresponding electrical energy;
a drive motor, wherein power is transmitted between said drive motor and said output shaft of said engine;
an accelerator used to set a target power output to said drive shaft;
a controller that sets a target driving state of said engine to output energy corresponding to the target power set by said accelerator, based on a predetermined condition;
that controls said engine, so as to enable said engine to be driven in the target driving state; and
that controls said energy adjustment system and said drive motor, so as to enable power output from said engine to be subjected to torque conversion and output as the target power to said drive shaft.
-
-
95. A method of controlling a power output apparatus for outputting power to a drive shaft, said method comprising the steps of:
-
(a) providing an engine having an output shaft;
an energy adjustment system having a first shaft connected with said output shaft of said engine and a second shaft connected with said drive shaft, said energy adjustment system adjusting a difference in energy between one of power input into and power output from said first shaft and one of power input into and power output from said second shaft; and
a drive motor, wherein power is transmitted between said drive motor and said output shaft of said engine;
(b) setting a target power output to said drive shaft;
(c) setting a target driving state of said engine to output energy corresponding to the target power set in said step (b), based on a predetermined condition; and
(d) controlling said engine, so as to enable said engine to be driven in the target driving state set in said step (c), and controlling said energy adjustment system and said drive motor, so as to enable power output from said engine to be subjected to torque conversion and output as the target power to said drive shaft.
-
-
96. A method of controlling a driving system, said method comprising the steps of:
-
(a) providing an engine having an output shaft;
an energy adjustment system having a first shaft connected with said output shaft of said engine and a second shaft connected with a drive shaft of said driving system, said energy adjustment system adjusting a difference in energy between one of power input into and power output from said first shaft and one of power input into and power output from said second shaft; and
a drive motor, wherein power is transmitted between said drive motor and said output shaft of said engine;
(b) setting a target power output to said drive shaft;
(c) setting a target driving state of said engine to output energy corresponding to the target power set in said step (b), based on a first condition for enhancing an energy efficiency of said engine that outputs energy corresponding to the target power and a second condition for making a vibration due to an operation of said engine out of a range of resonance frequency of said driving system; and
(d) controlling said engine, so as to enable said engine to be driven in the target driving state set in said step (c), and for controlling said energy adjustment system and said drive motor, so as to enable power output from said engine to be subjected to torque conversion and output as the target power to said drive shaft.
-
Specification