Method for starting a combustion engine
A technology for an internal combustion engine and a starting device, which is applied in the direction of an internal combustion piston engine, a combustion engine, and the starting of an engine, can solve the problems of increasing costs and increasing costs, and achieve the effects of reducing resistance, reducing system pressure, and simple devices.
Active Publication Date: 2011-05-25
DR ING H C F PORSCHE AG
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- Abstract
- Description
- Claims
- Application Information
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Problems solved by technology
However, such an additional accumulator adds considerably to the costs, which are also increased by additional spring elements, check valves, throttle valves and the like required to operate the additional accumulator
A very big disadvantage of this method is also that this accumulator must first be pressurized before hydraulic medium can be supplied to the hydraulic system
Method used
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Embodiment Construction
[0016] figure 1 is a very schematic illustration of an internal combustion engine 1 connected to a transmission 3 via a starting device 2 embodied in the invention as a wet clutch, preferably in the illustrated embodiment to a connected to an automatic transmission. Because figure 1 The components shown in may be of per se known design, no further details about said components being provided.
[0017] Both internal combustion engine 1 and transmission 3 are connected to a control unit 4 , which is also connected to a hydraulic pump 5 and a valve arrangement 6 . In the present invention the valve device 6 is shown as a 3 / 2 directional control valve, but such a configuration of the valve device 6 is to be regarded as purely exemplary and various other valve devices 6 can be used for The volumetric flow of hydraulic medium, preferably oil, generated by the hydraulic pump 5 is conducted via a line 7 via the valve device 6 to the starter device 2 .
[0018] It is generally know...
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The invention relates to a method for starting a combustion engine of a motor vehicle. In a method for starting an internal combustion engine of a motor vehicle which is connected to a transmission via a starting device and operated in a start / stop operating mode, a hydraulic medium is fed to the starting device via a valve device by a hydraulic pump. Before and during starting of the internal combustion engine by use of a starter, a control unit actuates the valve device in such a way that the valve device enables delivery of the hydraulic medium to the starting device. The control unit actuates the hydraulic pump in such a way that during the starting of the internal combustion engine the hydraulic pump delivers the hydraulic medium directly into the starting device in order to bring about a mechanical operative connection between the internal combustion engine and the transmission by the starting device.
Description
technical field [0001] The invention relates to a method for starting an internal combustion engine of a motor vehicle, which is connected via a starting device to a transmission and is operated in a start-stop operating mode by means of a hydraulic pump via a valve device A hydraulic medium is fed into the starting device. Background technique [0002] For car manufacturers, there has recently been a tendency to reintroduce the start-stop function for internal combustion engines of motor vehicles that had been introduced in the 1980s, that is to say, according to this function, During a short stop of the motor vehicle, for example at a traffic light or in a traffic jam, the internal combustion engine is switched off and restarted if required, which is usually indicated by an actuation of the accelerator pedal. However, when the motor vehicle is started, this is usually carried out by closing the mechanically operative connection between the internal combustion engine and t...
Claims
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Patent Timeline
Login to View More IPC IPC(8): B60W30/18B60W10/02B60W10/06F02D45/00F02D41/06
CPCF02N11/0814F16H2061/0046B60W30/192B60W30/18018B60W10/06Y02T10/48F02N2300/304B60W10/30F02N19/00F02N9/04F02N7/00B60W50/06F02N11/00B60W30/18027B60W10/02Y02T10/40B60W30/18054
Inventor P·鲍尔S·纳西夫
Owner DR ING H C F PORSCHE AG