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Old 12-30-2009, 05:59 PM   #13 (permalink)
oldbeaver
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Question Common Rail to an old diesel .... ¿Possible?

Very interesting...

What if one purchase a Bosch Common Rail system complete with high presure pump, electronic control and install it in an old diesel (taking out the mechanic injection pump)?

Does a new diesel engine have special characteristics as to tolerate more pressure, more efforts, etc., from a CRDI, compared to an old diesel?

Would like to hear your comment...

Tks,

OldBeaver


Quote:
Originally Posted by instarx View Post
All diesels, even the old ones, are direct injection.

Although a better fuel/air mix does help with common-rail injection systems, the main advantage comes from ability to fine tune the injection event. Old diesels just injected a slug of diesel into the cylinder at the appropriate time (giving that traditional diesel bang). With high pressure common-rail systems the injection period can be spread out over time - slowly at the beginning of the stroke and then pouring it on during the peak power stroke and then tapering off at the end. This wrings every bit of available power out of the stroke, resulting in more power, more torque, more efficiency, and most notably - less noise.
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