Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Evaporation fuel purge system

A technology for evaporative fuel and purification system, which is applied to the charging system, adding non-fuel substances to fuel, engine components, etc., and can solve problems such as blocking the flow of evaporative fuel

Active Publication Date: 2016-04-27
HAMANAKODENSO
View PDF8 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Additionally, the purge pump itself may block the flow of evaporated fuel when the purge pump stops operating

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Evaporation fuel purge system
  • Evaporation fuel purge system
  • Evaporation fuel purge system

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0024] refer to figure 1 , the evaporated fuel purification system 1 according to the first embodiment will be described. The evaporated fuel purification system 1 supplies, for example, hydrocarbon (HC) gas adsorbed in the fuel in the tank 12 to the intake passage 210 of the internal combustion engine 2 and prevents the evaporated fuel from being discharged into the atmosphere from the fuel tank 10 . like figure 1 As shown, the evaporated fuel purge system 1 is configured with an intake system of the internal combustion engine 2 having an intake passage 210 , and a purge system that supplies evaporated fuel to the intake system of the internal combustion engine 2 .

[0025] The evaporated fuel introduced into the intake passage 210 is mixed with the fuel for combustion supplied from the injector to the internal combustion engine 2 , and burned in the cylinders of the internal combustion engine 2 . The intake system of the internal combustion engine 2 has an intake duct 21 w...

no. 2 example

[0046] refer to Figure 2-Figure 6 , the evaporative fuel purification system 101 according to the second embodiment will be described. In the second embodiment, the same composition, operation and effect as those of the first embodiment are not described.

[0047] After the evaporated fuel is generated in the fuel tank 10, the evaporated fuel purification system 101 prevents the evaporated fuel from being discharged into the atmosphere. The concern is that if there is a hole in the purge system, fuel can be vented into the atmosphere as a leak from the evaporative fuel purge system. Furthermore, even if an abnormality such as a leak occurs, it does not exhibit a large influence in the operation of the internal combustion engine 2, so that the driver of the vehicle may not notice the abnormality. Therefore, the object of the second embodiment is to detect abnormalities in the purification system at an early stage.

[0048] The evaporative fuel purification system 101 includ...

no. 3 example

[0080] refer to Figure 8 and Figure 9 , the evaporative fuel purification system 201 according to the third embodiment will be described. In the third embodiment, the same composition, operation, and effect as those of the above embodiment are not described.

[0081] The evaporated fuel purification system 210 includes a concentration detector 5 for detecting the concentration of evaporated fuel in the fuel-air mixture of air and evaporated fuel entering the intake passage 210 after purification. The concentration detector 5 will be described below. The concentration detector 5 includes a differential pressure sensor, a sub-tank, a first solenoid valve, a second solenoid valve, a gas choke, a first detection channel, a second detection channel, and an atmosphere channel.

[0082] One end of the first detection channel is connected to the middle of the purification channel 16 . The other end of the first detection channel is connected to one end of the second detection ch...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

An evaporation fuel purge system includes: a fuel tank; a canister that absorbs and desorbs evaporation fuel emitted from the fuel tank; an intake passage for an internal combustion engine in which the evaporation fuel desorbed from the canister is mixed with fuel for combustion; a purge passage that connects the canister to the intake passage; an ejector device disposed in the purge passage; and a fluid drive device. The ejector device has a nozzle part that accelerates external fluid. The fluid drive device sends outside air corresponding to the external fluid to flow into the nozzle part.

Description

technical field [0001] The present disclosure relates to an evaporative fuel purification system. Background technique [0002] The evaporative fuel purge system has a pump that pumps evaporative fuel. Such systems are used in vehicles such as hybrid cars or idle-stop vehicles, where the processing time for evaporated fuel is relatively short; or, such systems are used in vehicles with engines with turbochargers, or In cars with low-friction engines, in these vehicles there is very little negative pressure at the intake manifold. [0003] JP4082004B2 (corresponding to US2002 / 0162457A1) describes a system in which a purge pump draws evaporated fuel out of a tank, and the evaporated fuel is delivered to the intake passage of the engine through a purge control valve. The purge pump is mounted on the pipe through which the evaporated fuel flows. [0004] Since evaporated fuel pumped by the purge pump passes through the purge pump, the purge pump requires a flameproof structur...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): F02M25/08
CPCF02M25/0809F02M25/0836F02M25/0872F02M25/089F02M35/10222
Inventor 枥原秀哉井野口哲规
Owner HAMANAKODENSO
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com