Method for operating a non-railborne hybrid vehicle
First Claim
1. A series hybrid vehicle comprising:
- an internal combustion engine for producing a mechanical power, means for changing an operating state of the internal combustion engine, a first electrical machine having a mechanical connection to at least one driving wheel for transmitting mechanical power, an electrical energy storer having an electrical connection to the first electrical machine for transmitting electrical power, and a second electrical machine which has a mechanical drive connection to the internal combustion engine and is operable as a generator to convert the mechanical power delivered by the internal combustion engine into electrical power;
wherein the course of power transmitted via the mechanical connection immediately follows an instruction, and the electrical energy storer, functioning as an intermediate storer, at least occasionally during the change of operating state of the internal combustion engine delivers or absorbs power; and
wherein the internal combustion engine, during the change in operating state, is guided through certain selected operating points on an internal combustion engine characteristic curve which, with regard to at least one operating parameter selected from minimal energy consumption, minimal emission of pollutants, minimal noise formation and best possible care of the engine, are optimal, or which permit a rapid increase in rotational speed of the internal combustion engine, independently of the course of the mechanical power transmitted via the mechanical connection such that there is a complete decoupling of the driving wheel(s) from the internal combustion engine with regard to power during the change in operating state of the internal combustion engine.
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Accused Products
Abstract
A hybrid vehicle and operating method, wherein, given a pending change in the rotational speed of a combustion engine of the hybrid vehicle, provides for a battery, independently of the power to be transmitted to the driving wheels, to be so charged or discharged in a directed manner that the change in rotational speed is effected as swiftly as possible. With regard to fuel consumption, pollutant emission and/or care of the engine, optimal operating points are passed through. On the one hand in the case of a pending increase in power of the combustion engine, it is provided for the battery to be more heavily discharged or less heavily charged according to the initial situation, and in the case of a pending reduction in power, to be more heavily charged or less heavily discharged.
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Citations
10 Claims
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1. A series hybrid vehicle comprising:
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an internal combustion engine for producing a mechanical power, means for changing an operating state of the internal combustion engine, a first electrical machine having a mechanical connection to at least one driving wheel for transmitting mechanical power, an electrical energy storer having an electrical connection to the first electrical machine for transmitting electrical power, and a second electrical machine which has a mechanical drive connection to the internal combustion engine and is operable as a generator to convert the mechanical power delivered by the internal combustion engine into electrical power; wherein the course of power transmitted via the mechanical connection immediately follows an instruction, and the electrical energy storer, functioning as an intermediate storer, at least occasionally during the change of operating state of the internal combustion engine delivers or absorbs power; and wherein the internal combustion engine, during the change in operating state, is guided through certain selected operating points on an internal combustion engine characteristic curve which, with regard to at least one operating parameter selected from minimal energy consumption, minimal emission of pollutants, minimal noise formation and best possible care of the engine, are optimal, or which permit a rapid increase in rotational speed of the internal combustion engine, independently of the course of the mechanical power transmitted via the mechanical connection such that there is a complete decoupling of the driving wheel(s) from the internal combustion engine with regard to power during the change in operating state of the internal combustion engine. - View Dependent Claims (2)
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3. A parallel hybrid vehicle comprising:
an internal combustion engine for producing a mechanical power, means for changing an operating state of the internal combustion engine, a first electrical machine having a mechanical connection to at least one driving wheel for transmitting mechanical power, and an electrical energy storer having an electrical connection to the first electrical machine for transmitting electrical power; wherein the internal combustion engine has a mechanical drive connection to at least one driving wheel; wherein the course of power transmitted via the mechanical connection immediately follows an instruction, and the electrical energy storer, functioning as an intermediate storer, at least occasionally during the change of operating state of the internal combustion engine delivers or absorbs power; and wherein the internal combustion engine, during the change in operating state, is guided through certain selected operating points on an internal combustion engine characteristic curve which, with regard to at least one operating parameter selected from minimal energy consumption, minimal emission of pollutants, minimal noise formation and best possible care of the engine, are optimal, or which permit a rapid increase in rotational speed of the internal combustion engine, independently of the course of the mechanical power transmitted via the mechanical connection such that there is a complete decoupling of the driving wheel(s) from the internal combustion engine with regard to power during the change in operating state of the internal combustion engine. - View Dependent Claims (4)
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5. A method for changing an operating state of an internal combustion engine of a hybrid vehicle having means for changing the operating state of the internal combustion engine, at least one electrical machine having a mechanical connection for transmitting mechanical power to at least one driving wheel, and an electrical energy storer having an electrical connection for transmitting electrical power to the electrical machine, said method comprising:
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transmitting a course of mechanical power via the mechanical connection immediately following an instruction; causing the electrical energy storer, functioning as an intermediate storer, to deliver or absorb power at least occasionally during the change of operating state of the internal combustion engine; and
,guiding the internal combustion engine, during the change in operating state, through certain selected operating points on an internal combustion engine characteristic curve which, with regard to at least one operating parameter selected from minimal energy consumption, minimal emission of pollutants, minimal noise formation and best possible care of the engine, are optimal, or which permit a rapid increase in rotational speed of the internal combustion engine, independently of the course of the mechanical power transmitted via the mechanical connection such that there is a complete decoupling of the driving wheel(s) from the internal combustion engine with regard to power during the change in operating state of the internal combustion engine. - View Dependent Claims (6, 7, 8, 9, 10)
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Specification