Power output apparatus, method of controlling power output apparatus ...

USO0RE38790E

(19) United States (12) Reissued Patent

(10) Patent Number: US (45) Date of Reissued Patent:

Maeda et al.

(54) POWER OUTPUT APPARATUS, METHOD OF

(56)

References Cited

CONTROLLING POWER OUTPUT

U.S. PATENT DOCUMENTS

APPARATUS, AND DRIVING SYSTEM WITH POWER OUTPUT APPARATUS INCORPORATED THEREIN

3,683,249 A 3,789,281 A

(75) Inventors: Tomoharu Maeda, Toyota (JP); Yoshihide Nii, Anjo (JP); Shoichi Sasaki, Okazaki (JP); Takeshi Kotani, Nisshin (JP); Eiji Yamada, OWariasahi (JP); Yasutomo Kawabata, Aichi-ken

PCT Filed:

Oct. 28, 1996

PCT No.:

PCT/JP96/03157

May 5, 1998

Kiuchi et al.

7/1997

Takeuchi et al. . . . . . .

A

.....

. . . .. 322/18 . . . .. 322/16

8/1998 Yamada et al. .......... .. 180/65.2 9/1998 Shamoto et al. .... .. 318/139 9/1998 Yamada et al. ............. .. 318/77

EP JP JP JP JP JP JP

0 725 474 A1 49-043311 50-30223 51-22132 53-133814 55-1030100 7-135701

8/1996 4/1974 3/1975 7/1976 11/1978 8/1980 5/1995

output from an engine to a crankshaft 56, and expressed as the product of its revolving speed and torque, to be con verted to the poWer expressed as the product of a revolving

Related US. Patent Documents Reissue of:

6,087,734

Issued:

Jul. 11, 2000

Appl. No.:

09/068,208

Filed:

May 5, 1998

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

PCT Pub. Date: May 22, 1997

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 de?ned 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 effi

Foreign Application Priority Data

Nov. 14, 1995 Jun. 26, 1996

4/1997

5,650,713

(Continued)

(57)

(87) PCT Pub. N0.: WO97/18101

(30)

5,621,304 A

Primary Examiner—Nicholas Ponomarenko (74) Attorney, Agent, or Firm—Oliff & Berridge, PLC

§ 371 (6X1),

(64) Patent No.:

Shibata ..................... .. 318/205 Shibata ........ .. 318/696

FOREIGN PATENT DOCUMENTS

(73) Assignee: Toyota Jidosha Kabushiki Kaisha, Toyota (JP) (21) Appl. No.: 10/191,281

(2), (4) Date:

8/1972 1/1974

5,791,426 A 5,801,497 A 5,804,934 A

(JP)

(22) (86)

RE38,790 E Sep. 6, 2005

(JP) ........................................... .. 7-321060 (JP) ........................................... .. 8-186736

ciency 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

(51)

Int. Cl.7 ............................................... .. F02N 11/06

(52)

US. Cl. ..................... .. 290/40 C; 322/16; 318/140;

(58)

Field of Search ........................... .. 290/40 C, 40 B;

180/652

322/16, 14, 15; 318/77, 9, 140; 180/652

CONTROL CPU

and the throttle valve position. Such control procedures of the poWer output apparatus enhance the energy efficiency of the Whole poWer output apparatus.

96 Claims, 36 Drawing Sheets

US RE38,790 E Page 2

US. PATENT DOCUMENTS 5,818,116 A

10/1998 Nakae et a1. ........... .. 290/38 R

5,914,575 A 5,917,248 A 5,920,160 A

6/1999 Sasaki ...................... .. 318/150 6/1999 Seguchi et a1. ............. .. 290/31 7/1999 Yamada et a1. .............. .. 318/9

5,903,113 A

5/1999 Yamada et a1. ............. .. 318/10

5,935,040 A

8/1999 Tabata et a1,

5,905,346 A 5,909,094 A

5/1999 Yamada et a1. ............. .. 318/50 6/1999 Yamada et a1. ........... .. 318/140

5,936,312 A 5,942,862 A

8/1999 Koide et a1. ............ .. 290/40 R 8/1999 Yamada et a1. .............. .. 318/9

477/3

U.S. Patent

Sep. 6,2005

Sheet 1 0f 36

US RE38,790 E

Fig. 1

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U.S. Patent

Sep. 6,2005

Sheet 2 0f 36

US RE38,790 E

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U.S. Patent

Sep. 6,2005

Sheet 3 0f 36

US RE38,790 E

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U.S. Patent

Sep. 6,2005

Sheet 4 0f 36

US RE38,790 E

Fig.4

T TORQUE T

T2

T1

REVOLVING SPEED N

i)

U.S. Patent

Sep. 6,2005

Sheet 5 0f 36

US RE38,790 E

Fig.5

Q TORQUE CONTROL

>

INPuT REVOLVING SPEED Nd

/S1OO

0F DRIvE SHAFT

INPUT AccELERAToR PEDAL

r5101

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Pd=Te>II< CONTROL CLUTCH MOTOR

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‘I CONTROL ASSIST MOTOR

f5204

CONTROL ENGINE

L/‘52O6

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U.S. Patent

Sep. 6,2005

Sheet 15 0f 36

US RE38,790 E

Fig.1?

AP\ AP2 ______ __F____________ ACCELERATOR PEDAL POSITION

AP]

P eA

P e 2

OUTPUT ENERGY

I

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FROM ENGINE

I P e 1

T C Jr

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TORQUE 0F CLUTCH MOTOR

Tc I

TIME 1'.

U.S. Patent

Sep. 6,2005

US RE38,790 E

Sheet 16 0f 36

F i g. 1 8

C ASSI ST MOTOR CONTROL? 5210

SET TORQUE COMMAND VALUE Ta* OF ASSI ST MOTOR

INPUT ROTAT IONAL ANGLE

0 d OF DRIVE SHAFT

MEASURE ASSIST MOTOR CURRENTS

Iuc.

fSZTZ

I v c

TRANSFORMATION OF COORDI NATES

lua Iva

[ ] H —sin (Gd-I20) sin6d][ ] Ida Iqa

-c0s (6d- I 20) cos6d

I COMPUTE VOLTAGE COMMAND VALUES

Vda=KplAlda+ZKi lAIda

Vqa=Kp2AIqa+ZKi2AIqa AIda=Ida>K-I da

AIqa=Iqa>IK-1d'c AIqc=Iqc>K—lqc

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TRANSFORMATION OF coonomnes OF VOLTAGE COMMAND VALUES

[vuc _ F‘Q’ [cos-6c Vvc _ COS (BC-1

20) -s -s ii nn60 (Oc-l 20)

PWM CONTROL

RET

Vdc Vqc