Electric generating system for automobiles and its control method

An electric generating system for automobiles, comprising a primary generator which is driven by an internal combustion engine of an automobile and charges a battery on said automobile and an electric motor which drives wheels of said automobile which are not driven by said internal combustion engine;

• a secondary generator which is driven by said internal combustion engine;
• a control unit which controls said secondary generator and said electric motor;
• and
• a battery charging circuit operatively associated with said battery,
• wherein
• said secondary generator is separated from said battery charging circuit and supplies output power thereof directly to said electric motor, and
• said control circuit controls the output of said generator according to a driving force requested by said automobile and controls the driving force of said electric motor by a voltage or current supplied from said secondary generator, wherein a field winding of said secondary generator inputs power from both said battery and said secondary generator and said two power sources are connected in an OR manner with diodes.

An electric generating system for automobiles comprising a primary generator which is driven by an internal combustion engine of an automobile and supplies power to an electric load of said automobile and an electric motor which drives wheels of said automobile which are not driven by said internal combustion engine, further comprising

• a secondary generator which is driven by said internal combustion engine and
• a control unit which controls said secondary generator and said electric motor;
• wherein
• said secondary generator is constituted to supply power to said electric motor and
• said control unit contains an external control unit except for a control unit of said secondary generator, and causes said external control unit to output a field current on/off signal as a command to control said secondary generator, and thus sets an arbitrary output voltage or current of said secondary generator.

An electric generating system for an automobile mounted on said automobile, in which either of front wheels and rear wheels of said automobile is driven by an internal combustion engine, which drives a primary generator for supplying an electric power to an electric load of said automobile, and other wheels, which differs from said wheels driven by said internal combustion engine, are driven by a driving force, comprising;

• an electric motor for generating said driving force;
• a secondary generator driven by said internal combustion engine;
• and a control unit for controlling said electric motor and said secondary generator;
• wherein
• said control unit controls an output of said secondary generator according to a driving force requested by said automobile;
• said electric motor generates said driving force by receiving said output of said secondary generator;
• said generated driving force is adjusted by said controlled output of said secondary generator;
• and
• an output voltage supplied to said electric motor from said secondary generator is switched in plural steps.

An electric generating system for an automobile mounted on said automobile, in which either of front wheels and rear wheels of said automobile is driven by an internal combustion engine, which drives a primary generator for supplying an electric power to a low-voltage electric load of said automobile, and other wheels, which differs from said wheels driven by said internal combustion engine, are driven by a driving force, comprising;

• an electric motor for generating said driving force;
• a secondary generator driven by said internal combustion engine;
• and a control unit for controlling said electric motor and said secondary generator;
• wherein
• said secondary generator is configured to supply an output having a voltage in a range from a lower voltage to a higher voltage compared with a low-voltage system voltage to said electric motor;
• said control unit controls an output of said secondary generator according to a driving force requested by said automobile;
• said electric motor generates said driving force by receiving said output of said secondary generator;
• said generated driving force is adjusted by said output of said secondary generator;
• and
• an output voltage supplied to said electric motor from said secondary generator is switched in plural steps.

An electric generating system for an automobile mounted on said automobile, in which either of front wheels and rear wheels of said automobile is driven by an internal combustion engine, which drives a primary generator for supplying an electric power to an electric load of said automobile, and other wheels, which differs from said wheels driven by said internal combustion engine, are driven by a driving force, comprising;

• an electric motor for generating said driving force;
• a secondary generator driven by said internal combustion engine;
• and a control unit for controlling said electric motor and said secondary generator;
• wherein
• said secondary generator is separated from said automobile-mounted batter and an electric generation output is configured to supply directly to said electric motor;
• said control unit controls an output of said secondary generator according to a driving force requested by said automobile;
• said electric motor generates said driving force by receiving said output of said secondary generator;
• said generated driving force is adjusted by said output of said secondary generator;
• and
• an output voltage supplied to said electric motor from said secondary generator is switched in plural steps.

An electric generating system for an automobile mounted on said automobile, in which either of front wheels and rear wheels of said automobile is driven by an internal combustion engine, which drives a primary generator for supplying an electric power to an electric load of said automobile, and other wheels, which differs from said wheels driven by said internal combustion engine, are driven by a driving force, comprising;

• an electric motor for generating said driving force;
• a secondary generator driven by said internal combustion engine;
• and
• a control unit for controlling said electric motor and said secondary generator;
• wherein
• said secondary generator is configured to supply an output having a voltage in a range from a lower voltage to a higher voltage;
• said control unit controls an output of said secondary generator according to a driving force requested by said automobile;
• said electric motor generates said driving force by receiving said output of said secondary generator;
• said generated driving force is adjusted by said output of said secondary generator;
• and
• an output voltage supplied to said electric motor from said secondary generator is switched in a plural steps.

An electric generating system for an automobile mounted on said automobile, in which either of front wheels and rear wheels of said automobile is driven by an internal combustion engine, which drives a primary generator for supplying an electric power to an electric load of said automobile, and other wheels, which differs from said wheels driven by said internal combustion engine, are driven by a driving force, comprising;

• an electric motor for generating said driving force;
• a secondary generator driven by said internal combustion engine;
• and a control unit for controlling said electric motor and said secondary generator;
• wherein
• said secondary generator is configured to supply an electric power generation output to said electric motor;
• said control unit includes an external control unit, except for a control unit of said secondary generator;
• said control unit output is an ON/OFF signal of a field current of said secondary generator as a control signal of said secondary generator from said external control unit to said control unit haven said secondary generator;
• and
• said control unit is configured to set freely an output voltage or an output current of said secondary generator.

An electric generating system for an automobile mounted on said automobile, in which either of front wheels and rear wheels of said automobile is driven by an internal combustion engine, which drives a primary generator for supplying an electric power to an electric load of said automobile, and other wheels, which differs from said wheels driven by said internal combustion engine, are driven by a driving force, comprising;

• an electric motor for generating said driving force;
• a secondary generator driven by said internal combustion engine;
• and a control unit for controlling said electric motor and said secondary generator;
• wherein
• said control unit controls an output of said secondary generator according to a driving force requested by said automobile;
• said electric motor generates said driving force by receiving said output of said secondary generator;
• and
• an output voltage supplied to said electric motor from said secondary generator is continuously variable in a preset voltage range.

An electric generating system for an automobile mounted on said automobile, in which either of front wheels and rear wheels of said automobile is driven by an internal combustion engine, which drives a primary generator for supplying an electric power to an electric load of said automobile, and other wheels, which differs from said wheels driven by said internal combustion engine, are driven by a driving force, comprising;

• an electric motor for generating said driving force;
• a secondary generator driven by said internal combustion engine;
• and a control unit for controlling said electric motor and said secondary generator;
• wherein
• said secondary generator is configured to enable supply an output having a voltage range from a lower voltage to a higher voltage compared with a low-voltage system voltage to said electric motor;
• said control unit adjusts said driving force generated by said electric motor according to said output of said secondary generator;
• and
• an output voltage supplied to said electric motor from said secondary generator is continuously variable in a preset voltage range;
• said control unit controls an output of said secondary generator according to a driving force requested by said automobile;
• said electric motor generates said driving force by receiving said output of said secondary generator;
• said control unit adjusts said driving force generated by said electric motor according to said output of said secondary generator;
• and
• an output voltage supplied to said electric motor from said secondary generator is continuously variable in a preset voltage range.

An electric generating system for an automobile mounted on said automobile, in which either of front wheels and rear wheels of said automobile is driven by an internal combustion engine, which drives a primary generator for supplying an electric power to a low-voltage electric load of said automobile, and other wheels, which differs from said wheels driven by said internal combustion engine, are driven by a driving force, comprising;

• an electric motor for generating said driving force;
• a secondary generator driven by said internal combustion engine;
• and
• a control unit for controlling said electric motor and said secondary generator;
• wherein
• said secondary generator is separated from said automobile-mounted battery and an electric power generation output is configured to supply directly to said electric motor;
• said electric motor generates said driving force by receiving said output of said secondary generator;
• said driving force generated from said electric motor is adjusted according to said output supplied from said secondary generator;
• and
• said control unit controls an output of said secondary generator according to a driving force requested by said automobile;
• said driving force generated from said electric motor is adjusted according to said output supplied from said secondary generator;
• and
• an output voltage supplied to said electric motor from said secondary generator is continuously variable in a preset voltage area.

An electric generating system for an automobile mounted on said automobile, in which either of front wheels and rear wheels of said automobile is driven by an internal combustion engine, which drives a primary generator for supplying an electric power to an electric load of said automobile, and other wheels, which differs from said wheels driven by said internal combustion engine, are driven by a driving force, comprising;

• an electric motor for generating said driving force;
• a secondary generator driven by said internal combustion engine;
• and
• a control unit for controlling said electric motor and said secondary generator;
• wherein
• said secondary generator is configured to supply an output having a voltage range from a lower voltage to a higher voltage compared with a low-voltage system voltage to said electric motor;
• said electric motor generates said driving force by receiving said output of said secondary generator;
• said control unit controls an output of said secondary generator according to a driving force requested by said automobile;
• said generated driving force generated from said electric motor is adjusted according to said output of said secondary generator;
• and
• an output voltage supplied to said electric motor from said secondary generator is continuously variable in a preset voltage area.

A method of controlling an electric generating system for an automobile, having a secondary generator which is driven according to a primary generator for supplying an electric power to an electric load of said automobile, and an internal combustion engine for driving either of front wheels and rear wheels of said automobile, said electric power being used to generate a driving a force by driving an electric motor, for driving wheels, other than the wheels driven by said internal combustion engine, comprising

• inputting a control signal of said secondary generator according to an operation condition of said automobile as an ON/OFF signal of a field current of said secondary generator, and controlling an operation of said secondary generator;
• outputting said electric power obtained by said operation of said secondary generator, and controlling said driving force outputted from said electric motor according to said electric power outputted from said secondary generator;
• and
• continuously varying an output voltage of said secondary generator in a preset voltage range, when said electric power output to said electric motor from said secondary generator.

A method of controlling an electric generating system for an automobile, having a secondary generator which is driven according to a primary generator for supplying an electric power to an electric load of said automobile, and an internal combustion engine for driving either of front wheels and rear wheels of said automobile, according to said obtained electric power by generating a driving force by driving an electric motor and according to said driving force by driving other wheels, which differs from said wheels driven by said internal combustion engine, comprising

• inputting a control signal of said secondary generator according to an operation condition of said automobile as an ON/OFF signal of a field current of said secondary generator and controlling an operation of said secondary generator;
• outputting said electric power obtained by operation of said secondary generator and controlling said driving force outputted from said electric motor according to said outputted electric power of said secondary generator;
• and
• switching an output voltage of said secondary generator in plural stages, when said electric power output to said electric motor from said secondary generator.

A method of controlling an electric generating system for an automobile, having a secondary generator which is driven according to a primary generator for charging an automobile-mounted battery, and an internal combustion engine for driving either of front wheels and rear wheels of said automobile, according to said obtained electric power by generating a driving force by driving an electric motor, and according to said driving force by driving other wheels, which differs from said wheels driven by said internal combustion engine, comprising

• making a supply source of a field current of an automobile-mounted battery at a starting time of said automobile, and inputting said field current to said secondary generator from said automobile-mounted battery according to an operation status of said automobile, and controlling an operation of said secondary generator;
• making a supply source of a field current of said secondary generator itself at a running time of said automobile, inputting said field current to said secondary generator from said secondary generator itself according to an operation status of said automobile, and controlling an operation of said secondary generator;
• outputting said electric power obtained according to said operation of said secondary generator, and controlling said driving force outputted from said electric motor according to said outputted electric power of said secondary generator;
• and
• switching an output voltage of said secondary generator in plural stages, when said electric power output to said electric motor from said secondary generator.

A method of controlling an electric generating system for an automobile, having a secondary generator which is driven according to a primary generator for supplying an electric power to an electric load of said automobile, and an internal combustion engine for driving either of front wheels and rear wheels of said automobile, said electric power being used to generate a driving a force by driving an electric motor, for driving wheels, other than the wheels driven by said internal combustion engine, comprising

• making a supply source of a field current of an automobile-mounted battery at a starting time of said automobile, inputting said field current to said secondary generator from said automobile-mounted battery according to an operation status of said automobile, and controlling an operation of said secondary generator;
• making a supply source of a field current of said secondary generator itself at a running time of said automobile, inputting said field current to said secondary generator from said secondary generator itself according to an operation status of said automobile, and controlling an operation of said secondary generator;
• outputting said electric power obtained according to said operation of said secondary generator, and controlling said driving force outputted from said electric motor according to said outputted electric power of said secondary generator;
• and
• switching an output voltage of said secondary generator in plural stages, when said electric power output to said electric motor from said secondary generator.