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Control device and control method for controlling a hydraulic press

A technology for controlling devices and hydraulic presses, which is applied in transmission control, transmission parts, motor vehicles, etc., can solve problems such as large lubrication requirements, and achieve the effect of simplifying and determining

Active Publication Date: 2019-06-07
PEZHO SITROEN AUTOMOBILS SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] However, controlling the speed of the oil pump based on the engine speed data is problematic because the lubrication demand can be high when the engine is switched off during all-electric driving

Method used

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  • Control device and control method for controlling a hydraulic press
  • Control device and control method for controlling a hydraulic press
  • Control device and control method for controlling a hydraulic press

Examples

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Embodiment Construction

[0047] Preferably, the invention applies to hybrid vehicles comprising two traction engines. The hybrid powertrain uses an electric oil pump to lubricate the mechanical parts of the driveline, which are subject to friction while driving. The invention can reduce the running noise of the electric oil pump felt by passengers.

[0048] The invention also applies to any type of hydraulic machine, such as an oil pump of a hydraulic engine or an oil pump of an internal combustion engine. The invention applies to hybrid powertrains as well as conventional powertrains.

[0049] figure 1 Shown is a hydraulic hybrid powertrain comprising an internal combustion engine 5 connected to the wheel front axle and a traction motor 6 connected to the wheel rear axle. The powertrain also includes a gearbox 2 equipped with an electric oil pump 1 . The electric oil pump 1 includes an electric motor whose rotation of a rotor generates a flow of oil. The faster the gearbox spins, the higher the ...

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Abstract

The invention relates to a device for controlling a hydraulic machine (1) of a power train and to a method for controlling the hydraulic machine (1). The invention also relates to a control device capable of assessing the increase in the masking noise generated by variation of the actual speed of the vehicle and determining a limit to the operating state of the hydraulic machine (1) on the basis of the actual speed of the vehicle. The invention is of use in a vehicle including a hydraulic machine.

Description

technical field [0001] The invention relates to a control device for a hydraulic machine that controls a powertrain and a control method for the hydraulic machine. Background technique [0002] The transmission of the powertrain of a motor vehicle includes gears and bearings and therefore needs to be kept lubricated during driving. [0003] The differential ring gear of the manual transmission is immersed in oil and sprayed with oil in the transmission to lubricate the contact between the transmission gears. The grooves recover the oil that flows along the walls to carry the oil to the different bearings of the gearbox. [0004] For automatic transmissions, some have a mechanical oil pump that is driven by the rotation of the transmission converter, which is driven by the rotation of the internal combustion engine. [0005] There is also an electric oil pump for the transmission. These electric oil pumps are driven with a fixed rotational speed in order to simplify handli...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H57/04F16H61/00B60W10/08B60W20/10
CPCF16H57/0434F16H57/0439
Inventor O·巴伦吉恩M·德佩尔松
Owner PEZHO SITROEN AUTOMOBILS SA