US6098735A — Hybrid drive system

Claim 1

Independent Claim 126 words

Hybrid drive system comprising: an internal combustion engine with an output shaft, to which output shaft there is connected, via a coupling, an energy converter having first and second rotors, the rotors being rotatable at different speeds in relation to each other, at least one of said rotors being provided with one or more windings, which are supplied with current via a current-converter, the current-converter being supplied with direct current from a direct current source, and a transmission with variable gear ratio coupled to one of the rotors of the energy converter, wherein the transmission and the current-converter cooperate by means of a control arrangement comprising a control unit for controlling rotational speed and torque of the internal combustion engine and for controlling the energy converter.

Claim 2

Dependent Claim 126 words

Hybrid drive system comprising: an internal combustion engine with an output shaft, to which output shaft there is connected, via a coupling, an energy converter having first and second rotors, the rotors being rotatable at different speeds in relation to each other, at least one of said rotors being provided with one or more windings, which are supplied with current via a current-converter, the current-converter being supplied with direct current from a direct current source, and a transmission with variable gear ratio coupled to one of the rotors of the energy converter, wherein the transmission and the current-converter cooperate by means of a control arrangement comprising a control unit for controlling rotational speed and torque of the internal combustion engine and for controlling the energy converter.

Claim 3

Dependent Claim 27 words

Hybrid drive system according to claim 1, wherein in that the first rotor is provided with permanent magnets and the second rotor is provided with the windings.

Claim 4

Dependent Claim 48 words

Hybrid drive system according to claim 1, wherein in that the first rotor is arranged concentrically inside the second rotor and the first rotor is coupled to the output shaft of the internal combustion engine via the coupling and that the second rotor is coupled to the transmission.

Claim 5

Dependent Claim 24 words

Hybrid drive system according to claim 1, wherein in that the coupling is a clutch which can be locked and be prevented from rotating.

Claim 6

Dependent Claim 22 words

Hybrid drive system according to claim 1, wherein in that the winding is a three-phase winding which is supplied with three-phase current.

Claim 7

Dependent Claim 24 words

Hybrid drive system according to claim 5, wherein in that the three-phase winding is provided with engageable short-circuiting means for short-circuiting the three-phase winding.

Claim 8

Dependent Claim 20 words

Hybrid drive system according to claim 1, wherein in that the transmission is coupled to an axle of a vehicle.

Claim 9

Dependent Claim 18 words

Hybrid drive system according to claim 1, wherein in that the transmission is a continuously variable transmission (CVT).

Claim 10

Dependent Claim 126 words

A wheeled vehicle comprising an internal combustion engine with an output shaft, an energy converted coupled to the output shaft via a coupling, the energy converted having first and second rotors, the rotors being rotatable at different speeds in relation to each other, at least one of the rotors being provided with one or more windings which are supplied with current via a current-converter, the current-converter being supplied with direct current from a direct current source, and a transmission with variable gear ratio coupled to one of the rotors of the energy converter, the transmission and the current-converter cooperating by means of a control arrangement comprising a control unit for controlling rotational speed and torque of the internal combustion engine and for controlling the energy converter.

Claim 11

Dependent Claim 126 words

A wheeled vehicle comprising an internal combustion engine with an output shaft, an energy converted coupled to the output shaft via a coupling, the energy converted having first and second rotors, the rotors being rotatable at different speeds in relation to each other, at least one of the rotors being provided with one or more windings which are supplied with current via a current-converter, the current-converter being supplied with direct current from a direct current source, and a transmission with variable gear ratio coupled to one of the rotors of the energy converter, the transmission and the current-converter cooperating by means of a control arrangement comprising a control unit for controlling rotational speed and torque of the internal combustion engine and for controlling the energy converter.

Claim 12

Dependent Claim 181 words

Control arrangement for a hybrid drive system, comprising: a control unit for controlling torque and rotational speed of an internal combustion engine; an energy converter connected to the internal combustion engine via a clutch, the energy converter having first and second rotors which can be rotated at different speeds relative to each other, at least one of the rotors being provided with one or more windings; a current converter supplying current to the rotors, the current converter being supplied with current from a direct current source; a continuously variable transmission coupled to one of the rotors; rotational speed sensors arranged to sense a rotational speed of the first and seconds rotors, the rotational speed sensors sending signals to a rotational speed-estimating unit which provides signals to the control unit for controlling torque and rotational speed; and a pedal position sensor for detecting a position of a pedal and which sends signal to the control unit, the control unit communicating with the internal combustion engine and the current converter and sending signals to a transmission control unit controlling the continuously variable transmission.

Claim 13

Dependent Claim 181 words

Control arrangement for a hybrid drive system, comprising: a control unit for controlling torque and rotational speed of an internal combustion engine; an energy converter connected to the internal combustion engine via a clutch, the energy converter having first and second rotors which can be rotated at different speeds relative to each other, at least one of the rotors being provided with one or more windings; a current converter supplying current to the rotors, the current converter being supplied with current from a direct current source; a continuously variable transmission coupled to one of the rotors; rotational speed sensors arranged to sense a rotational speed of the first and seconds rotors, the rotational speed sensors sending signals to a rotational speed-estimating unit which provides signals to the control unit for controlling torque and rotational speed; and a pedal position sensor for detecting a position of a pedal and which sends signal to the control unit, the control unit communicating with the internal combustion engine and the current converter and sending signals to a transmission control unit controlling the continuously variable transmission.

Claim 14

Dependent Claim 87 words

Control arrangement according to claim 10, further comprise a driving strategy unit which receives signals concerning a driving strategy, said driving strategy being selected by an operator through a control panel, whereafter the driving strategy unit provides a signal to the control unit for controlling torque and rotational speed and to the clutch, said driving strategy unit receiving signals from a monitor, which monitors the voltage level in the direct current source, and receives signals from a sensor which senses the state of the internal combustion engine.

Claim 15

Dependent Claim 24 words

Control arrangement according to claim 10, wherein the first rotor is provided with permanent magnets and the second rotor is provided with the windings.

Claim 16

Dependent Claim 44 words

Control arrangement according to claim 10, wherein the first rotor is arranged concentrically inside the second rotor, and the first rotor is coupled to the output shaft of the internal combustion engine via the clutch, and the second rotor is coupled to the transmission.

Claim 17

Dependent Claim 16 words

Control arrangement according to claim 10, wherein the clutch can be locked and prevented from rotating.

Claim 18

Dependent Claim 19 words

Control arrangement according to claim 10, wherein the winding is a three-phase winding which is supplied with three-phase current.

Claim 19

Dependent Claim 22 words

Control arrangement according to claim 15, wherein the three-phase winding is provided with an engageable short-circuiting means to short-circuit the three-phase winding.

Claim 20

Dependent Claim 17 words

Control arrangement according to claim 10, wherein the transmission is coupled to an axle of a vehicle.

Claim 21

Dependent Claim 15 words

Control arrangement according to claim 10, wherein the transmission is a continuously variable transmission (CVT).

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	2003-08-08	2004-02-07	2004-08-08	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	2007-08-08	2008-02-07	2008-08-08	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	2011-08-08	2012-02-07	2012-08-08	$7700.00	Window Closed / Lapsed

Hybrid drive system

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