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Fuel vapor emissions control device with leak neutralization

A technology for fuel vapor and emission control, which is applied in the directions of fuel injection control, layout combined with fuel supply of internal combustion engines, electrical control, etc., and can solve problems such as insufficient safety level.

Pending Publication Date: 2022-03-11
VTESCO TECH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the particularly critical case of active fuel vapor emission control devices provided with pumps, these devices have proven insufficient in terms of the level of safety they provide

Method used

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  • Fuel vapor emissions control device with leak neutralization
  • Fuel vapor emissions control device with leak neutralization
  • Fuel vapor emissions control device with leak neutralization

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0043] figure 1 and figure 2 A first embodiment of the invention is shown. These schematic diagrams depict an internal combustion engine 1 , a fuel tank 2 for supplying fuel to the engine 1 , and a fuel vapor emission control device 3 .

[0044] The engine 1 is here schematically represented as a cylinder-piston assembly 4 seen in cross-section, and an assembly 5 associated with the cylinder head of the engine, including elements such as valves, injectors, spark plugs, exhaust gas recirculation system and the like. These known elements will not be described in further detail here.

[0045] In this example, the engine 1 comprises an intake circuit provided in a conventional manner with an air filter 8 , a turbocharger 6 compressing the intake gas through an exchanger 7 , and a throttle butterfly valve 9 .

[0046] The fuel tank 2 supplies an injection circuit which supplies fuel to the injectors of the engine 1 (this injection circuit is not shown).

[0047] The fuel vapor...

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PUM

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Abstract

The invention relates to a fuel vapor emission control device comprising: an absorbent filter (10); -a purge circuit (15) comprising: a pump (11) provided with a suction inlet (21) and a delivery outlet (27); an upstream conduit (16); and a downstream conduit (17). The pump (11) comprises a suction chamber (20) into which the suction inlet (21) opens. The upstream conduit (16) is connected to the absorbent filter (10) through one end thereof and leads to the suction chamber (20) through the other end thereof. The downstream conduit (17) comprises a tubular double wall (23, 24) defining two separate ducts (25, 26).

Description

technical field [0001] The present invention relates to the field of internal combustion engines, and more particularly to the fueling of internal combustion engines. The present invention aims to provide a fuel vapor emission control device intended for a vehicle equipped with an internal combustion engine fed from a fuel tank. [0002] In particular, motor vehicles supply their internal combustion engines from a fuel tank which risks experiencing an increase in pressure, for example when the ambient temperature increases. Fuel stored in the fuel tank actually releases fuel vapors, so the fuel vapors need to be removed from the fuel tank. [0003] For environmental and legislative reasons, as well as for energy efficiency reasons, most vehicles currently in production include a fuel vapor emission control device that absorbs fuel vapors from the fuel tank and periodically injects them into the engine to effectively Helps supply the engine. Thus, fuel vapors are avoided to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M25/08F02B37/00F02D41/00B60K15/035
CPCF02M25/0836F02M25/0872F02M25/0809F02M25/089F02B37/00F02D41/003B60K15/03504F02M25/0818B60K2015/03514B60K2015/03585Y02T10/12B01D53/0407B01D2253/102B01D2259/4516B01D2259/4566
Inventor T·科莱特
Owner VTESCO TECH GMBH