Control apparatus for vehicular drive system
First Claim
1. A control apparatus for a vehicular drive system including an electric differential portion and a mechanical power transmitting portion which are disposed in series in a power transmitting path between an engine and a drive wheel of a vehicle, said control apparatus being configured to limit an output of said engine according to a difference between an actual rotating speed of said mechanical power transmitting portion, and a theoretical rotating speed estimated from a presently established speed ratio of the mechanical power transmitting portion;
- wherein said electric differential portion includes a differential mechanism operable to distribute the output of said engine to a first electric motor and an input shaft of said mechanical power transmitting portion, and a second electric motor connected to said input shaft, said control apparatus comprises first-electric-motor-speed control means configured to control a rotating speed of said first electric motor such that a rotating speed of said second electric motor does not exceed a predetermined upper limit.
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Accused Products
Abstract
A control apparatus for a vehicular drive system including an electric differential portion and a mechanical power transmitting portion which are disposed in series in a power transmitting path between an engine and a drive wheel of a vehicle, the control apparatus being configured to limit an output of the engine according to a difference between an actual rotating speed of an input rotary member of the mechanical power transmitting portion, and a theoretical rotating speed calculated from an actual vehicle speed and a presently established speed ratio of the mechanical power transmitting portion, whereby reduction of torque capacity of an input clutch provided in the mechanical power transmitting portion does not cause an excessive rise of the rotating speed of a rotary member which is located on one side of the input clutch nearer to the engine, and an excessive rise of the rotating speed of an electric motor connected to the input rotary member.
27 Citations
24 Claims
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1. A control apparatus for a vehicular drive system including an electric differential portion and a mechanical power transmitting portion which are disposed in series in a power transmitting path between an engine and a drive wheel of a vehicle, said control apparatus being configured to limit an output of said engine according to a difference between an actual rotating speed of said mechanical power transmitting portion, and a theoretical rotating speed estimated from a presently established speed ratio of the mechanical power transmitting portion;
wherein said electric differential portion includes a differential mechanism operable to distribute the output of said engine to a first electric motor and an input shaft of said mechanical power transmitting portion, and a second electric motor connected to said input shaft, said control apparatus comprises first-electric-motor-speed control means configured to control a rotating speed of said first electric motor such that a rotating speed of said second electric motor does not exceed a predetermined upper limit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A control apparatus for a vehicular drive system including an electric differential portion and a mechanical power transmitting portion which are disposed in series in a power transmitting path between an engine and a drive wheel of a vehicle, said control apparatus being configured to limit an output of said engine according to a ratio of an actual rotating speed of said mechanical power transmitting portion to a theoretical rotating speed estimated from a presently established speed ratio of the mechanical power transmitting portion;
wherein said electric differential portion includes a differential mechanism operable to distribute the output of said engine to a first electric motor and an input shaft of said mechanical power transmitting portion, and a second electric motor connected to said input shaft, said control apparatus comprises first-electric-motor-speed control means configured to control a rotating speed of said first electric motor such that a rotating speed of said second electric motor does not exceed a predetermined upper limit. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A control apparatus for a vehicular drive system including an electric differential portion and a mechanical power transmitting portion which are disposed in series in a power transmitting path between an engine and a drive wheel of a vehicle, said control apparatus being configured to limit an output of said engine according to a difference of an actual speed ratio of said mechanical power transmitting portion from a theoretical speed ratio of the mechanical power transmitting portion;
wherein said electric differential portion includes a differential mechanism operable to distribute the output of said engine to a first electric motor and an input shaft of said mechanical power transmitting portion, and a second electric motor connected to said input shaft, said control apparatus comprises first-electric-motor-speed control means configured to control a rotating speed of said first electric motor such that a rotating speed of said second electric motor does not exceed a predetermined upper limit. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24)
Specification