There are several areas that have changed drastically during the last
few years with diesel engines and will greatly affect the near future of
diesel engine technologies. The highway trucking industry was the first
to require these changes to meet federal EPA emissions guidelines for
diesel engines back in the late 1980s. In the mid-1990s these same
guidelines were required of the off-highway heavy equipment industry.
Now even areas not affected in the past such as the marine, petroleum,
and agricultural industries have come under these new requirements. They
will change these industries in the same way they have previously
changed the trucking and heavy equipment industries. During the last 20
years only certain engine horsepower sizes or industries have come under
these federal guidelines. However, the 2007, 2010, and 2012 emissions
guidelines will cover and affect all horsepower sizes and industries.
Additionally, in most areas the current technologies to meet the 2007
guidelines will not completely meet the 2010 and 2012 requirements
without additional technological changes or improvements. These
technological changes are inevitable and future technician training
needs will be a reality. This is where diesel engine course books like
Troubleshooting and Repairing Diesel Engines can help the technician
stay current with these changing technologies. To show how rapidly these
changes have taken place, information of some past and current examples
of those areas affected are mentioned...