Hybrid automobile
First Claim
1. A drive system for vehicles comprising:
- an internal combustion engine having a drive shaft;
a motor-generator operably connected to said drive shaft for rotation therewith, said motor-generator having a no-load speed which is within the range of speeds of said internal combustion engine, below said no-load speed said motor-generator drives the drive shaft as a motor and above said no-load speed said motor-generator is driven by said drive shaft as a generator;
an electric energy storage means operably connected to said motor-generator, said storage means supplying electric energy to the motor-generator when said motor-generator is operating below said no-load speed and collecting electrical energy when said motor-generator is operating above said no-load speed; and
means driven by said drive shaft for transmitting the combined mechanical power of said engine and said motor-generator to the drive wheels of a vehicle.
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Accused Products
Abstract
A parallel hybrid drive system for self propelled vehicles including a direct current motor-generator having a drive shaft in common with an internal combustion engine leading to a variable speed transmission and a final drive train. The motor-generator has a no-load speed, established by a separate field exciter, below which it drives the shaft as a motor and above which it is driven by the shaft as a generator. Storage batteries are operatively connected to the motor-generator to supply power to it below the no-load speed. The internal combustion engine operates over a small RPM range around its most efficient speed at a power level established by a fixed throttle setting. The transmission is operatively connected to an accelerator and direction selector switch to vary the speed and direction of the vehicle.
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Citations
27 Claims
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1. A drive system for vehicles comprising:
- an internal combustion engine having a drive shaft;
a motor-generator operably connected to said drive shaft for rotation therewith, said motor-generator having a no-load speed which is within the range of speeds of said internal combustion engine, below said no-load speed said motor-generator drives the drive shaft as a motor and above said no-load speed said motor-generator is driven by said drive shaft as a generator; an electric energy storage means operably connected to said motor-generator, said storage means supplying electric energy to the motor-generator when said motor-generator is operating below said no-load speed and collecting electrical energy when said motor-generator is operating above said no-load speed; and means driven by said drive shaft for transmitting the combined mechanical power of said engine and said motor-generator to the drive wheels of a vehicle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
- an internal combustion engine having a drive shaft;
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11. A drive system including:
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a motor-generator comprising an armature winding and a means for producing a magnetic field across the armature winding to generate an armature current which increases with armature speed; a magnetic field exciter means for causing said magnetic field producing means to produce and maintain a magnetic field across the armature winding of such magnitude and direction that at one speed of armature rotation the voltage across said armature winding is equal and opposite to the voltage across said electric energy storage means, whereby the resulting armature current flow is in a first direction when the speed of armature rotation is below said one speed and the net current flow is in the opposite direction when the speed of armature rotation is above said one speed; a first drive shaft means rotatable with said armature windings; an internal combustion engine means including a second drive shaft means connected to said first drive shaft means for rotation therewith; and means driven by one of said drive shaft means for transmitting the combined mechanical power of said motor-generator and said engine means to the drive wheels of a vehicle. - View Dependent Claims (12, 13, 14, 15, 16)
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17. A variable speed drive system including:
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a motor-generator means having a rotatable drive shaft; magnetic field exciter means for the motor-generator means such that said motor-generator changes between a motor mode and a generator mode at a preselected speed; a liquid fueled engine means including a carburetor with a fixed throttle setting and a drive shaft connected with said motor-generator means drive shaft; a transmission means connected with at least one of said drive shafts; a power output shaft connected to said transmission means; and a speed control means connected with said transmission means to vary the speed of rotation of the output shaft. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25)
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26. A power train including:
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an armature of an electric motor-generator and an internal combustion engine both connected to a drive shaft; means for supplying relatively constant power to said drive shaft from said internal combustion engine over a predetermined range of drive shaft speeds; battery means connected to an armature winding in said motor-generator whereby said motor-generator is changed between a motor mode and a generator mode by the speed of said armature; variable transmission means connected between said drive shaft and a power output shaft; and speed control means for varying said transmission means whereby the speed of the output shaft is controlled by varying the transmission means. - View Dependent Claims (27)
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Specification