evaporative emissions control technology an engine manufacturer s perspective l.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
Evaporative Emissions Control Technology – An Engine Manufacturer’s Perspective PowerPoint Presentation
Download Presentation
Evaporative Emissions Control Technology – An Engine Manufacturer’s Perspective

Loading in 2 Seconds...

play fullscreen
1 / 26

Evaporative Emissions Control Technology – An Engine Manufacturer’s Perspective - PowerPoint PPT Presentation


  • 118 Views
  • Uploaded on

Evaporative Emissions Control Technology – An Engine Manufacturer’s Perspective. Two Threshold Design Issues: Pressurized Fuel Systems? Metal or Treated Plastic Tank? Implementation Issues: Lead-time for new fuel systems Equipment integration issues. Fuel Cap 1999 Mazda 626.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Evaporative Emissions Control Technology – An Engine Manufacturer’s Perspective' - beata


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
evaporative emissions control technology an engine manufacturer s perspective
Evaporative Emissions Control Technology – An Engine Manufacturer’s Perspective
  • Two Threshold Design Issues:
    • Pressurized Fuel Systems?
    • Metal or Treated Plastic Tank?
  • Implementation Issues:
    • Lead-time for new fuel systems
    • Equipment integration issues

030702 B&S ARB Workshop Comments

sealed tank systems

Fuel Cap 1999 Mazda 626

Sealed Tank Systems

030702 B&S ARB Workshop Comments

sealed tank system characteristics
Sealed Tank System Characteristics
  • Tank Pressure Control Valve
  • Pressurized fuel tank
  • Tank Pressure-Vacuum Relief Mechanism
  • Fuel lines and connectors

030702 B&S ARB Workshop Comments

tank pressure control valves
Tank Pressure Control Valves
  • Require dual vent and fuel shut-off valves
    • Isolate of carburetor from high pressures
    • Sequential valve actuation – start and hot restart performance?
  • Automatic valve actuation mechanism
    • Engine brake bail only on WBM
    • Blade-brake clutch solution?
    • Other application solution?
  • Spatial relations or packaging limitations

030702 B&S ARB Workshop Comments

wbm fuel system spatial relationships
WBM Fuel System Spatial Relationships

Carburetor

Brake

Carburetor

Fuel Tank

Carburetor

Brake

Fuel Tank

Fuel Tank

Brake

Briggs & Stratton

Tecumseh

Briggs & Stratton

030702 B&S ARB Workshop Comments

tank pressurization concerns

5.0 psig spray

Tank Pressurization Concerns
  • Fatigue failure consequences
  • Crack sprays – increased risk for uncontrolled liquid fuel release if cracks occur
  • Pressurized tanks will be less forgiving under impact conditions
  • Tank deformation

030702 B&S ARB Workshop Comments

tank deformation under pressure
Tank Deformation Under Pressure

030702 B&S ARB Workshop Comments

tank deformation at 3 0 psig
Tank Deformation at 3.0 psig

030702 B&S ARB Workshop Comments

tank deformation at 5 0 psig
Tank Deformation at 5.0 psig

030702 B&S ARB Workshop Comments

automotive fuel tank pressure vacuum relief cap
Automotive Fuel TankPressure-Vacuum Relief Cap

030702 B&S ARB Workshop Comments

pressure vacuum relief performance
Pressure –Vacuum Relief Performance

030702 B&S ARB Workshop Comments

pressure relief 30 part population
Pressure Relief – 30 Part Population

030702 B&S ARB Workshop Comments

pressure relief after soak
Pressure Relief – After Soak

030702 B&S ARB Workshop Comments

pressure relief umbrella valves
Pressure Relief – Umbrella Valves

Data available Monday, 6/30.

Will show cracking pressure in10 piece population before and after Cert fuel soak.

030702 B&S ARB Workshop Comments

pressure vacuum relief valves summary
Pressure-Vacuum Relief Valves Summary
  • Commercially available fuel system pressure-vacuum relief valves:
    • Not binary (leak before relief)
    • Relief pressures are inconsistent
    • Fuel exposure affects valve performance

030702 B&S ARB Workshop Comments

fuel hose and connection reliability summary
Fuel Hose and Connection Reliability Summary
  • Pressurized fuel systems will introduce stresses to fuel system connections
    • Reduced reliability
    • Fuel spray possible at failure
    • Gross-emitters
    • Operator Risk
    • Maintenance and Repair Risk

030702 B&S ARB Workshop Comments

j2260 tubing and connectors
J2260 Tubing and Connectors

030702 B&S ARB Workshop Comments

packaging constraints fuel line
Packaging Constraints - Fuel Line

WBM Engine – Line Routing and Interferences

030702 B&S ARB Workshop Comments

automotive fuel cap warnings

Pontiac Montana

Dodge Neon

Ford Ranger

Subaru Forrester

Automotive Fuel Cap Warnings

030702 B&S ARB Workshop Comments

automotive fuel fill neck
Automotive Fuel Fill Neck

030702 B&S ARB Workshop Comments

small off road engine fuel fill neck b s 6 5 hp vertical shaft
Small Off-Road Engine Fuel Fill Neck B&S 6.5 Hp Vertical Shaft

030702 B&S ARB Workshop Comments

small off road engine fuel fill neck b s 8 hp horizontal shaft
Small Off Road Engine Fuel Fill Neck B&S 8 hp Horizontal Shaft

030702 B&S ARB Workshop Comments

small off road engine fuel fill neck m9 10
Small Off-Road Engine Fuel Fill NeckM9/10

030702 B&S ARB Workshop Comments

vapor release management
Vapor Release Management
  • Challenges are more acute than those encountered in other industries
    • Short fill necks
    • Tight packaging
    • Thermal management of exhaust and catalyst
    • Angle of operation
    • Refueling

030702 B&S ARB Workshop Comments