Date: 18 Jan 2005 18:37:01 GMT From: Dave Hinz <DaveHinznospamcop.net> Subject: Re: Opened DI Casette - For those interested
On Tue, 18 Jan 2005 18:08:39 +0000, Colin Stamp <colinnospamp.plus.com> wrote: > > Like I said, DI tries to trade off the number of breakdowns against > the cost of each one. Maybe not everyones idea of the best compromise, > but that's what they went for. Well, DI is a lot more complicated than just a replacement for points, condensor, rotor, coil, cap, and wires. It's an integral part of the engine instrumentation and management system. The spark plugs are used as combustion chamber sensors to determine the impedance of the fuel:air mixture, to decide (among other things) optimal boost and spark timing on a per-cylinder basis. These things just aren't possible with a distributor, cap, and rotor type system. > You'll get a very jaundiced view of DI > by reading newsgroups like this one. People won't post about it unless > it breaks. > > I'm sure there are other benefits too. Cost maybe? I doubt it's cheaper than old-style ignitions systems, but emissions and performance can be attained with DI that aren't possible without it. Dave Hinz
 |
 |
 |
 |
 |
