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  • ‘Broadband’ Lambda sensor – function and role

    |Date: August 13, 2012
    'Broadband' Lambda sensor - function and role

    ‘Broadband’ Lambda sensor – function and role

    With the ever greater demand to reduce fuel consumption and to lower exhaust emission levels, it has beco ...

    With the ever greater demand to reduce fuel consumption and to lower exhaust emission levels, it has become necessary to operate engines away from the stoichiometric fuelling point under certain condi ...

    August 13, 2012
    Read more
  • How can incorrect engine oil cause CAT or DPF failure?

    |Date: June 26, 2012
    How can incorrect engine oil cause CAT or DPF failure?

    How can incorrect engine oil cause CAT or DPF failure?

    Workshops are reporting a disturbing increase in the number of failures and near failures of Diesel Parti ...

    Workshops are reporting a disturbing increase in the number of failures and near failures of Diesel Particulate Filters (DPFs) on vehicles that do mainly local, urban driving. ...

    June 26, 2012
    Read more
  • Lambda sensors – installation tips and common problems

    |Date: June 26, 2012
    Lambda sensors - installation tips and common problems

    Lambda sensors – installation tips and common problems

    Diagnosis and investigationTo correctly test and diagnose a Lambda problem it is important to understand ...

    Diagnosis and investigationTo correctly test and diagnose a Lambda problem it is important to understand what measurements you’re looking for as output. Early O2 sensors work on voltage, Titania senso ...

    June 26, 2012
    Read more
  • Cooled EGR system – function and application

    |Date: June 26, 2012
    Cooled EGR system - function and application

    Cooled EGR system – function and application

    Ever more stringent emission regulations require a constant improvement in pollutant reduction methods. F ...

    Ever more stringent emission regulations require a constant improvement in pollutant reduction methods. For diesel engines this particularly applies to a further reduction in nitrogen oxides (NOx). ...

    June 26, 2012
    Read more
  • Zirconia switching Lambda sensor – function and operation

    |Date: June 26, 2012
    Zirconia switching Lambda sensor - function and operation

    Zirconia switching Lambda sensor – function and operation

    There are basically three different, non-interchangeable types of Lambda sensor. The zirconium dioxide an ...

    There are basically three different, non-interchangeable types of Lambda sensor. The zirconium dioxide and titanium dioxide Lambda sensors are also called switching, voltage jump or ‘binary’ sensors, ...

    June 26, 2012
    Read more
  • The role of cylinder sleeves and fire rings

    |Date: June 26, 2012
    The role of cylinder sleeves and fire rings

    The role of cylinder sleeves and fire rings

    To extend the service life of commercial vehicle engines and cut harmful exhaust emissions, some engine m ...

    To extend the service life of commercial vehicle engines and cut harmful exhaust emissions, some engine manufacturers are increasingly using cylinder sleeves with a fire ring. Design and functionFire ...

    June 26, 2012
    Read more
  • What killed the Cat?

    |Date: June 26, 2012
    What killed the Cat?

    What killed the Cat?

    A great deal of my time is spent fault finding and diagnosing emission faults, some of which potentially ...

    A great deal of my time is spent fault finding and diagnosing emission faults, some of which potentially could result in a damaged catalytic converter or diesel particulate filter (DPF), even though t ...

    June 26, 2012
    Read more
  • EGR systems – how they work and common causes of failure

    |Date: June 26, 2012
    EGR systems - how they work and common causes of failure

    EGR systems – how they work and common causes of failure

    The number of diesel vehicles in Europe has increased dramatically in recent years. As the latest Euro Em ...

    The number of diesel vehicles in Europe has increased dramatically in recent years. As the latest Euro Emission Standard Regulations have come into force, there has never been a more crucial time to c ...

    June 26, 2012
    Read more
  • Back pressure complaint – 4 gas analysis

    |Date: June 26, 2012
    Back pressure complaint - 4 gas analysis

    Back pressure complaint – 4 gas analysis

    For the purposes of this article, I thought it would be appropriate to take you through the content of a ...

    For the purposes of this article, I thought it would be appropriate to take you through the content of a recent email I received from a gentleman in Italy. Thankfully his English was good so I haven’t ...

    June 26, 2012
    Read more
  • The function of tumble flaps and swirl flaps

    |Date: June 26, 2012
    The function of tumble flaps and swirl flaps

    The function of tumble flaps and swirl flaps

    Pierburg manifolds, as used in modern diesel vehicles, often have swirl or tumble flaps in their inlet po ...

    Pierburg manifolds, as used in modern diesel vehicles, often have swirl or tumble flaps in their inlet ports. Swirl flapsSwirl flaps produce a swirl alongside the cylinder axle. They are used in diese ...

    June 26, 2012
    Read more
  • Diesel Particulate Filters explained

    |Date: June 26, 2012
    Diesel Particulate Filters explained

    Diesel Particulate Filters explained

    Diesel particulate filters have been fitted to diesel cars for around 12 years now and have received a mi ...

    Diesel particulate filters have been fitted to diesel cars for around 12 years now and have received a mixed reaction from the industry. The modern diesel is a much more sophisticated affair than its ...

    June 26, 2012
    Read more
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