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Method for detecting the trapping or twisting of a discharge pipe

A pipeline and detection system technology, applied in the field of pipeline extrusion, can solve problems such as expensive and complex pressure sensors, and achieve the effects of simplifying vehicles, simplifying structure, and reducing costs

Pending Publication Date: 2021-04-16
VTESCO TECH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The addition and use of tank-mounted pressure sensors may prove complex and expensive, with significant disadvantages for motor vehicle manufacturers

Method used

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  • Method for detecting the trapping or twisting of a discharge pipe
  • Method for detecting the trapping or twisting of a discharge pipe
  • Method for detecting the trapping or twisting of a discharge pipe

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0032] figure 1 A motor vehicle 1 is shown including an internal combustion engine 10 , a fuel tank 20 , an evaporation system 30 and a detection system 40 .

[0033] Internal combustion engine 10 (or internal combustion engine) includes one or more hollow cylinders 100, each cylinder defining a combustion chamber into which a mixture of air and fuel is injected.

[0034] Fuel, such as gasoline, is stored in fuel tank 20 from which fuel is drawn by injection pump 25 for delivery into cylinders 100 of engine 10 via injection rail 26 and injectors 27 .

[0035] Since it is necessary to control the pressure of the gas contained in the tank 20 in order to avoid any damage or accident and limit the pollution caused by the fuel vapors, the vehicle 1 includes an evaporation system 30 which is connected to the engine 10, the tank 20 and via air filtration Connected to the outside of the vehicle 1, the air filter 35 makes it possible to absorb the vapors and deliver them to the combus...

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PUM

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Abstract

The present invention relates to a method for detecting the trapping or twisting of a discharge pipe that connects a fuel tank and an absorbent filter of a motor vehicle evaporation system. The method comprises the steps, with the valve initially being in its closed position, of moving (E1) the valve using the gases circulating in the absorbent filter, measuring (E2), in the absence of operation of the solenoid, the voltage generated across the terminals of the solenoid as a result of the movement of the valve, and of detecting (E3) a pinching or twisting of the discharge pipe when the voltage measured lies between a first predetermined threshold and a second predetermined threshold.

Description

technical field [0001] The present invention relates to the field of motor vehicles, and more particularly to a method and system for detecting pinching of a conduit connecting an absorptive filter to a fuel tank of a motor vehicle. Background technique [0002] Today, motor vehicles with internal combustion engines have, in a known manner, an evaporation system connected to a fuel tank. Such a system can vent the fuel vapors that have accumulated in the tank. In order to prevent these polluted gases from being released directly into the atmosphere, it is known to install a filter called an "absorptive filter" (also called "canister", "activated carbon canister" in English) between the tank and the atmosphere. The device is connected to the tank via a discharge line. [0003] However, this discharge conduit may be squeezed or twisted so that the polluting gas no longer flows to the absorbent filter, but remains in the tank, and this may lead to overpressure when the tank i...

Claims

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Application Information

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IPC IPC(8): B60K15/035B60K15/03
CPCB60K15/035B60K15/03519B60K2015/03302B60K2015/03528B60K2015/03571B60K2015/03585B60K2015/03236B60K2015/03328F16K37/0041
Inventor T·柯列
Owner VTESCO TECH GMBH
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