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Method and device for operating a hybrid drive system

A hybrid driving and working technology, which is applied to the arrangement of multiple different prime movers of power plants, hybrid vehicles, and general power plants, etc.

Active Publication Date: 2016-12-14
ROBERT BOSCH GMBH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Although it is known that the operation of hybrid drive systems can be adjusted for the various operating states required, for example for catalytic converter heating, it has not yet been possible to generally take special functional requirements into account in a general method that specifies the Optimization of energy input for determining load distribution

Method used

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  • Method and device for operating a hybrid drive system
  • Method and device for operating a hybrid drive system

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Embodiment Construction

[0051] figure 1An exemplary schematic diagram of a drive system embodied as hybrid drive system 1 is shown. The hybrid drive system 1 has a first drive unit, which can be designed, for example, as an internal combustion engine 2 . The internal combustion engine 2 is supplied with chemical energy in the form of fuel, which is stored in a fuel tank 3 . A second drive unit configured as an electric drive 4 is provided. During operation, the electric drive 4 is supplied with electrical energy from the electric energy store 5 .

[0052] Internal combustion engine 2 and electric drive 4 can be coupled to one another via a common drive shaft 6 . By means of a first controllable clutch 7 arranged between the internal combustion engine 2 and the electric drive 4 , the coupling between the internal combustion engine 2 and the electric drive 4 can be established or decoupled. This depends on whether the internal combustion engine 2 is to contribute to the provision of drive torque. ...

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Abstract

A method for operating a hybrid drive system which includes ascertaining an overall cost function that takes into account the cost function, which is a function of the operating point, for minimizing an energy usage of the hybrid drive system, and that takes into account one or more partial cost functions, which are a function of the operating point, which are each assigned to a requested special function; determining an optimized operating point of the hybrid drive system corresponding to an optimization according to the ascertained overall cost function; operating of the hybrid drive system at the operating point; and executing of those of the requested special functions for which the determined operating point is within an operating range assigned to the respective special function.

Description

technical field [0001] The invention relates to a motor vehicle with a hybrid drive system which operates in particular according to an operating strategy which takes into account the minimization of the energy input but also the requirements for other operating states or diagnostics. Background technique [0002] In order to operate the hybrid drive system, the load distribution between the different drive units or, in the case of an internal combustion engine as one of the drive units, the switching state of the internal combustion engine (start / stop-operation) is continuously recorded. For example, an optimization method carried out online, ie continuously in the vehicle, can be used to determine the load distribution. The optimization method is usually optimized with regard to the minimization of energy inputs or emissions. [0003] Especially when the internal combustion engine is in operation, special functions must be carried out in certain driving situations and / or ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02D29/02F02D43/00F02D28/00F01N11/00
CPCF01N9/00F01N9/002F01N11/00F01N11/002F01N2570/14F02D28/00F02D29/02F02D41/008F02D41/22F02D41/222F02D2200/02F02D2200/04F02D2200/101B60K6/48B60K2006/4825B60W10/06B60W10/08B60W20/50B60W20/11B60W20/15B60W20/16G07C5/08Y02T10/40Y02T10/62Y10S903/93G07C5/02
Inventor S.奥托P.格拉德尔B.凯施F.迈尔D.里克
Owner ROBERT BOSCH GMBH
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