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Air supply system of an internal combustion engine

A technology for exhaust systems and fuel tanks, applied in the direction of charging systems, fuel air intakes, and adding non-fuel substances to fuel, etc., can solve problems such as regeneration of activated carbon filters

Inactive Publication Date: 2014-05-14
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In turbocharged engines, hybrid vehicles and engines that operate the engine as much as possible dethrottled in order to reduce fuel consumption, there is basically a problem that conventional fuel tank exhaust via negative pressure in the intake manifold is not sufficient to Activated carbon filter regeneration

Method used

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  • Air supply system of an internal combustion engine
  • Air supply system of an internal combustion engine

Examples

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Embodiment Construction

[0032] figure 1 An exhaust system 10 of an engine of a motor vehicle is shown. The exhaust system 10 is connected to a fuel tank 12 of the motor vehicle, the connection being formed via a sorption filter 14 for temporarily receiving fuel evaporated from the fuel tank 12 .

[0033] The sorption filter 14 is connected to the fuel tank 12 via a tank connection line 16 . In addition, the sorption filter 14 is connected to the air supply line 19 of the engine—here an internal combustion engine 22 in the form of a turbocharged engine—by means of a first line 40 on the one hand through a flushing line 18 , and on the other hand. On the one hand, a flow-conducting connection to the intake line 20 of the engine is formed by means of the second line 42 .

[0034] An air mass sensor, a turbocharger unit 36 ​​and a charge air cooler 38 are arranged on the air supply line 19 . In the suction line 20 there is a throttle device 32 , which here is preferably designed in the form of a throt...

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Abstract

The invention relates to a venting system (10) for a fuel tank (12), comprising a sorption filter (14) for temporarily storing fuel evaporating from the fuel tank (12) and comprising a delivery device (24) arranged between the sorption filter (14) and an air supply system of an internal combustion engine (22) in a fluid-conducting manner. The internal combustion engine (22) is a turbocharged engine with a turbocharger unit (36) and a throttling device (32) in the air supply system. The sorption filter (14) is connected to the air supply system in a fluid-conducting manner by means of a first line (40) at a first inlet point (29) arranged upstream of the turbocharger unit (36) and by means of a second line (42) at a second inlet point (31) arranged downstream of the throttling device (32). A tank venting valve (26) is arranged in the second line (42), and the first line (40) branches off from the second line (42) upstream of the tank venting valve (26) in the flow direction towards the second inlet point (31). According to the invention, the delivery device (24) is additionally advantageously driven using a brushless DC electric motor (25).

Description

technical field [0001] The invention relates to an exhaust system for a fuel tank with a sorption filter for temporarily storing fuel evaporated from the fuel tank and a fluid line between the sorption filter and the air supply system of an internal combustion engine . Furthermore, the invention relates to a fuel tank with a sorption filter for temporarily storing the fuel evaporated from the fuel tank and a feed device arranged between the sorption filter and the air supply system of the internal combustion engine. Box exhaust system. Finally, the invention also relates to the use of such an exhaust system in a motor vehicle. Background technique [0002] Volatile substances, such as essentially hydrocarbons and small fractions of other volatile components, evaporate in the fuel tank of the motor vehicle depending on the pressure and temperature conditions prevailing in the fuel tank and the composition of the fuel. For reasons of environmental protection and safety thes...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M25/08F02D29/02F02M35/10
CPCF02B29/0406F02B37/00F02D29/02F02D41/0007F02D41/0032F02D41/18F02D2200/0406F02M25/0818F02M25/0836F02M35/10157F02M35/1038F02M35/10386Y02T10/12
Inventor H·登茨
Owner ROBERT BOSCH GMBH
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