[home][rumors and news][model release matrix][dealer network][desktop calendar][exhaust notes][tov forums][links][search][sponsors][garage][login]

Tire Rack Upgrade Garage
 Search for a Dealer:
 Canadian Flag US Flag
 Honda Acura
 ZIP  
Acura
There are currently no active Acura promotions
Honda
There are currently no active Honda promotions
American Honda Reports Sales Figures for November 2017
More.......................
Road & Track dyno tests 9th gen Accord V6 MT vs 2018 Accord 2.0T 10AT
More.......................
2018 Acura RLX Arrives in Showrooms with Striking Redesign
More.......................
American Honda Reports Sales Figures for October 2017
More.......................
Second-Generation NSX “Dream Project” by ScienceofSpeed to Debut at SEMA
More.......................
Honda Reveals their Sports EV Concept
More.......................
Watch Live: Honda Reveals their Sports EV Concept at the Tokyo Motor Show
More.......................
American Honda reports strong sales numbers for September 2017
More.......................
Civic --> Re: Used CTR Price
Join Discussion......
General Talk --> Re: One Year as a BMW Driver in a Lifetime of Honda Support
Join Discussion......
General Talk --> Re: New Honda DOHC V6 Image?
Join Discussion......
General Talk --> Re: ILX Going Away?
Join Discussion......
Civic --> Re: Civic Si, $199 lease offer
Join Discussion......
General Talk --> Re: Proud new owner of...
Join Discussion......
General Talk --> Re: Honda's future HEV lineup
Join Discussion......
Pilot --> Re: Sulfur smell and Emission light
Join Discussion......
Today's Reading Links --> Re: New Company aims for Full-fledged Development of Hydrogen Recharging Station Network in Japan
Join Discussion......
General Talk --> Re: Midsize market dominoes starting to fall
Join Discussion......
RLX --> Re: RLX, a nice car without soul.
Join Discussion......
Today's Reading Links --> Re: Civic Type-R on Ignition - Best Driver's Car Under $50k?
Join Discussion......
Accord --> Re: Drove the 2.0T EXL today
Join Discussion......
Accord --> Re: Any out there? - 2018 Accord 1.5T Manual Reviews
Join Discussion......
TSX --> Re: 2nd Gen TSX OEM Floor Mats
Join Discussion......
Honda Develops Next-Generation Clean Diesel Engine
 Date: September 24, 2006 21:58
 Submitted by:  JeffX
 Source: Honda EU Press Release
 Credibility Rating: Not Specified


Capable of Meeting Stringent Tier II Bin 5 Emissions Requirements in the U.S.

Honda Motor Co., Ltd., today announced it has developed a next-generation diesel engine that reduces exhaust gas emissions to a level equal to a gasoline engine. Honda's next-generation diesel engine employs a revolutionary NOx catalytic converter that enables a great reduction in NOx emissions sufficient to meet stringent U.S. Environmental Protection Agency (EPA) Tier II Bin 5 emissions requirements (based on Honda's internal calculations). This catalytic converter features the world's first innovative system using the reductive reaction of ammonia generated within the catalytic converter to "detoxify" nitrogen oxide (NOx) by turning it into harmless nitrogen (N2).

The new catalytic converter utilizes a two-layer structure: one layer adsorbs NOx from the exhaust gas and converts a portion of it into ammonia, while the other layer adsorbs the resulting ammonia, and uses it later in a reaction that converts the remaining NOx in the exhaust into nitrogen (N2). Ammonia is a highly effective reagent for reducing NOx into N2 in an oxygen-rich, lean-burn atmosphere. This ability to generate and store ammonia within the catalytic converter has enabled Honda to create a compact, lightweight NOx reduction system for diesel engines. The system also features enhanced NOx reduction performance at 200–300ºC, the main temperature range of diesel engines.

Honda designed the catalytic converter for use with its 2.2 i-CTDi diesel engine, which has earned widespread praise for quiet, clean operation and dynamic performance since its introduction in 2003 on the European Accord model. By further advancing combustion control, the 2.2 i-CTDi delivers cleaner exhaust to the NOx catalytic converter. Honda achieved this by optimizing the combustion chamber configuration, reducing fuel injection time with a 2,000-bar common rail injection system and boosting the efficiency of the EGR (exhaust gas recirculation) system. Thanks to these improvements, Honda has reduced the amount of NOx and soot normally found in engine exhaust, while increasing power output.

Along with developing superior technology for cleaning exhaust gas, Honda plans to address other technical challenges in developing clean diesel engines, such as handling diesel fuels with different cetane numbers and meeting U.S. On-Board Diagnostic System requirements. Honda plans to introduce its next-generation diesel engine in the U.S. within three years.

Gasoline engines presently employ three-way catalytic converters that offer NOx reduction rates as high as 99%, but this performance is possible only at the stoichiometric air-fuel ratio. In the oxygen-rich environment of a lean-burn diesel engine, three-way catalytic converters only reduce NOx levels by approximately 10%. Honda's new catalytic converter efficiently reduces NOx in a lean-burn atmosphere, enabling diesel engines to rival gasoline engines in cleanliness. The compact system is also easy to install in passenger vehicles.

  • Reaction Mechanism of the New NOx Catalytic Converter for Diesel Engines


    1. During lean burn operation, the NOx adsorbent in the lower layer adsorbs NOx from the exhaust gas.
    2. As needed, the engine management system adjusts the engine air-fuel ratio to rich-burn, wherein the NOx in the NOx adsorption layer reacts with hydrogen (H2) obtained from the exhaust gas to produce ammonia (NH3). The adsorbent material in the upper layer temporarily adsorbs the NH3.
    3. When the engine returns to lean-burn operation, NH3 adsorbed in the upper layer reacts with NOx in the exhaust gas and reduces it to harmless nitrogen (N2).

  • Exhaust Gas Cleaning System Configuration



  • Last edited by JeffX on May 07, 2008 16:32

    Click Here to Submit Your Comments

    Viewing Threshold (What is this?)

    [fancy] [flat] [simple]
    Your Feedback
    Date Subject User
    09-25-2006 13:55
    Message below viewing threshold View   (Score: 0, Inflammatory)
    97AcuraCL
    09-25-2006 18:54
    Message below viewing threshold View   (Score: 0, Normal)
    Garlick
    09-25-2006 19:54
    Message below viewing threshold View   (Score: 0, Normal)
    ostrich
    09-25-2006 20:41
    Message below viewing threshold View   (Score: 0, Normal)
    80honda
    09-25-2006 21:37
    Message below viewing threshold View   (Score: 0, Normal)
    6SPDTL
    09-27-2006 10:16
    Message below viewing threshold View   (Score: 0, Normal)
    NSXman
    09-27-2006 11:29
    Message below viewing threshold View   (Score: 0, Normal)
    Garlick
    09-27-2006 12:46
    Message below viewing threshold View   (Score: 0, Normal)
    OpenWheelRacing
    09-28-2006 19:36
    Message below viewing threshold View   (Score: 0, Normal)
    Bollocks
    09-29-2006 01:41
    Message below viewing threshold View   (Score: 0, Normal)
    NSXman
    10-01-2006 08:07
    Message below viewing threshold View   (Score: 0, Normal)
    MacGyver
    09-25-2006 21:02
    Message below viewing threshold View   (Score: 0, Normal)
    jimmyp5
    09-25-2006 13:09
    Cool power bulge!!! NT   (Score: 1, Normal)
    94sir
    10-01-2006 07:40
    Re: Cool power bulge!!! NT   (Score: 1, Normal)
    MacGyver
    09-26-2006 09:56
    Diesel in Fit   (Score: 1, Normal)
    PK
    09-26-2006 11:38
    Re: Diesel in Fit   (Score: 1, Normal)
    RayChuang
    09-26-2006 19:56
    Re: Diesel in Fit   (Score: 1, Normal)
    danielgr
    09-26-2006 20:54
    Re: Diesel in Fit   (Score: 1, Normal)
    CarPhreakD
    09-27-2006 13:56
    Re: Diesel in Fit   (Score: 1, Normal)
    PK
    09-27-2006 17:29
    Re: Diesel in Fit   (Score: 1, Normal)
    bref
    09-27-2006 17:33
    Re: Diesel in Fit   (Score: 1, Normal)
    bref
    09-28-2006 06:24
    Re: Diesel in Fit   (Score: 1, Normal)
    danielgr
    09-27-2006 18:10
    Re: Diesel in Fit   (Score: 1, Normal)
    George Madison
    09-28-2006 15:49
    Re: Diesel in Fit   (Score: 1, Normal)
    PK
    09-30-2006 00:21
    Re: Diesel in Fit   (Score: 1, Normal)
    VI
    09-25-2006 10:18
    2000 bar common rail   (Score: 1, Normal)
    danielgr
    09-25-2006 10:20
    Re: 2000 bar common rail   (Score: 1, Normal)
    danielgr
    09-25-2006 12:36
    Re: 2000 bar common rail   (Score: 1, Normal)
    Accord CE8
    09-25-2006 12:40
    Re: 2000 bar common rail   (Score: 1, Normal)
    Accord CE8
    09-25-2006 13:15
    Re: 2000 bar common rail   (Score: 1, Normal)
    94sir
    09-25-2006 19:00
    Re: 2000 bar common rail   (Score: 1, Normal)
    danielgr
    09-26-2006 12:21
    Re: 2000 bar common rail   (Score: 1, Normal)
    Accord CE8
    09-26-2006 19:37
    Re: 2000 bar common rail   (Score: 1, Normal)
    danielgr
    09-27-2006 12:31
    Re: 2000 bar common rail   (Score: 1, Normal)
    Accord CE8
    09-28-2006 07:47
    Re: 2000 bar common rail   (Score: 1, Normal)
    danielgr
    09-28-2006 16:11
    Re: 2000 bar common rail   (Score: 1, Normal)
    bref
    09-25-2006 11:18
    Re: 2000 bar common rail   (Score: 1, Normal)
    RayChuang
    09-25-2006 01:13
    Diesel a better alternative than hybrid...?   (Score: 1, Normal)
    ItsAllAboutHonda
    09-25-2006 02:06
    Re: Diesel a better alternative than hybrid...?   (Score: 1, Normal)
    RayChuang
    09-25-2006 11:57
    Re: Diesel a better alternative than hybrid...?   (Score: 1, Normal)
    notyper
    09-25-2006 12:48
    Re: Diesel a better alternative than hybrid...?   (Score: 1, Normal)
    CarPhreakD
    09-27-2006 19:05
    Re: Diesel a better alternative than hybrid...?   (Score: 1, Normal)
    IXLR8
    09-25-2006 03:42
    Re: Diesel a better alternative than hybrid...?   (Score: 1, Normal)
    Bebop
    09-25-2006 03:47
    Re: Diesel a better alternative than hybrid...?   (Score: 1, Normal)
    csempere
    09-25-2006 04:42
    Why not both?   (Score: 1, Normal)
    nmclark
    09-25-2006 10:41
    Re: Why not both?   (Score: 1, Normal)
    ipribadi
    09-25-2006 13:29
    Re: Why not both?   (Score: 1, Normal)
    RSX Idiot
    09-25-2006 14:06
    Re: Why not both?   (Score: 1, Normal)
    Potenza
    09-25-2006 06:12
    Re: Diesel a better alternative than hybrid...?   (Score: 1, Normal)
    KWu
    09-25-2006 08:26
    Re: Diesel a better alternative than hybrid...?   (Score: 1, Normal)
    80honda
    09-25-2006 19:29
    Re: Diesel a better alternative than hybrid...?   (Score: 1, Normal)
    MasterOfDaDomain
    09-26-2006 03:18
    Re: Diesel a better alternative than hybrid...?   (Score: 1, Normal)
    Bebop
    09-25-2006 11:38
    Putting it on CRV with 6 speed manual   (Score: 1, Normal)
    gt
    09-25-2006 12:52
    Re: Putting it on CRV with 6 speed manual   (Score: 1, Normal)
    fender4
    09-25-2006 13:02
    Re: Putting it on CRV with 6 speed manual   (Score: 1, Normal)
    garfield134
    09-25-2006 23:18
    Re: Putting it on CRV with 6 speed manual   (Score: 1, Normal)
    RayChuang
    09-25-2006 21:48
    Hood scoop!   (Score: 1, Normal)
    6SPDTL
    09-25-2006 19:00
    Finally!   (Score: 1, Normal)
    6SPDTL
    09-25-2006 16:08
    Ring me up for a 2008 Accord diesel   (Score: 1, Normal)
    Janizary
    09-25-2006 17:35
    Re: Ring me up for a 2008 Accord diesel   (Score: 1, Normal)
    97accordSE
    2018 Acura RLX PR Photo Gallery
    Read Article....................
    TOV First Drive: 2018 Honda Accord
    Read Article....................
    2018 Honda Accord Specifications and Features (FINAL)
    Read Article....................
    2018 Honda Accord Hybrid PR Photo Gallery
    Read Article....................
    2018 Accord Touring 2.0T PR Photo Gallery
    Read Article....................
    2018 Accord Touring 1.5T PR Photo Gallery
    Read Article....................
    Contact TOV | Submit Your Article | Submit Your Link | Advertise | TOV Shop | Events | Our Sponsors | TOV Archives
    Copyright © 2017 Velocitech Inc. All information contained herein remains the property of Velocitech Inc.
    The Temple of VTEC is not affiliated with American Honda Motor Co., Inc. TOV Policies and Guidelines - Credits - Privacy Policy