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Method for controlling and regulating a power train

A technology for power trains and motor vehicles, applied in the field of power trains, can solve problems such as small accuracy and strong errors

Inactive Publication Date: 2016-01-06
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this assumption does not correspond to the facts in pressure accumulators with actually variable processes, so that the calculation of the available and extractable energy of the pressure accumulator with the aid of Poisson's equation and the assumed adiabatic state change has a strong error or say with little accuracy

Method used

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  • Method for controlling and regulating a power train
  • Method for controlling and regulating a power train
  • Method for controlling and regulating a power train

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Embodiment Construction

[0044] exist figure 1 The drive train 1 shown in is used for the transmission of force or mechanical energy from an internal combustion engine 5 with a stroke piston 6 to two drive wheels 32 of a motor vehicle (not shown). The drive train 1 is here divided into a mechanical drive train 2 and a hydraulic drive train 3 with a hydraulic drive 32 in which mechanical energy is converted into hydraulic energy and vice versa.

[0045]The engine shaft 7 of the internal combustion engine 5 drives a drive shaft 10 of a power split transmission 8 , for example a planetary transmission 9 . The planetary gear 9 drives the first driven shaft 11 and the second driven shaft 12 of the power split gear 8 by means of mechanical energy transmitted from the engine shaft 7 to the power split gear 9 . The first output shaft 11 of the power split transmission 8 drives the mechanical transmission subsystem 2 with a mechanical transmission not shown, while the second output shaft 12 of the power split...

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Abstract

Method for controlling and / or regulating a power train for a motor vehicle includes importing a hydraulic fluid into a pressure container to reduce the gas volume in the pressure container and increase the actual temperature and the actual pressure of the gas, and / or exporting the hydraulic fluid from the pressure container to increase the gas volume in the pressure container and reduce the actual temperature and the actual pressure of the gas, measuring the gas measuring pressure in the pressure container by a pressure sensor, determining the gas actual temperature, calculating the gas actual volume by using the gas measuring pressure and the gas actual temperature, calculating the energy provided for the pressure container by the gas final volume in the pressurization of the pressure container reducing from the gas actual volume in the pressure container, and / or calculating the energy extracted from the pressure container by the gas final volume in the decompression of the pressure container increasing from the gas actual volume in the pressure container, calculating the polytropic exponent by P model calculation, and calculating the providing and extracting energy by the calculated polytropic exponent.

Description

technical field [0001] The invention relates to a method for controlling and / or regulating a drive train according to the preamble of claim 1 and a drive train according to the preamble of claim 13 . Background technique [0002] Motor vehicles with an internal combustion engine have a drive train for transmitting power from the internal combustion engine to at least one drive wheel. Generally, in motor vehicles, the two drive wheels are driven by means of a differential gear. The internal combustion engine provides mechanical energy via the engine shaft, and the mechanical energy may be distributed from the engine shaft to first and second driven shafts on the power split transmission via the power split transmission. In this case, the first output shaft drives the mechanical transmission sub-train of the drive train, wherein the mechanical energy is transmitted only mechanically to at least one drive wheel or to the differential gear. The second drive shaft drives a hydr...

Claims

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Application Information

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IPC IPC(8): F15B1/033B60K6/12
CPCB60K6/12B60W50/0098B60W2050/0037F16H61/4096F16H61/40Y02T10/62
Inventor S·斯里拉姆
Owner ROBERT BOSCH GMBH