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Why are IGBT's used in ignitions so much?

Started by Joerg April 28, 2018
onsdag den 2. maj 2018 kl. 00.41.33 UTC+2 skrev Clifford Heath:
> On 02/05/18 04:05, Joerg wrote: > > On 2018-04-30 17:26, Jim Thompson wrote: > >> On Mon, 30 Apr 2018 23:54:59 +0000 (UTC), David Lesher > >> <wb8foz@panix.com> wrote: > >>> Joerg <news@analogconsultants.com> writes: > >>>> My Citroen had a really cool system. The coil's secondary fed both > >>>> plugs > >>>> in its two-cylinder engine (wasted spark method) which meant no > >>>> distributor. > >>> All 17 HP, right? [Joerg is clearly a deux chevaux owner...] > > Was, it rusted out from underneath me like French cars tend to do. Only > > 16 horses though. It had a boxer engine with a whopping 421cc. > > Wasted spark in a 2-cylinder boxer? > That's horizontally opposed, but not strictly a boxer. > Boxers fire opposite cylinders at the same time.
A boxer have separate crank pins 180 degrees apart, so they hit TDC the same time, a "flat" has shared crank pins so one piston is at TDC while the other is at BDC the 2CV has separate cranks pins and I expect that it fires alternating left right, it has the sparkplug in series so it would be hard to get a spark if they were both in compression at the same time
On 02/05/18 09:22, Joerg wrote:
> On 2018-05-01 15:41, Clifford Heath wrote: >> On 02/05/18 04:05, Joerg wrote: >>> On 2018-04-30 17:26, Jim Thompson wrote: >>>> On Mon, 30 Apr 2018 23:54:59 +0000 (UTC), David Lesher >>>> <wb8foz@panix.com> wrote: >>>>> Joerg <news@analogconsultants.com> writes: >>>>>> My Citroen had a really cool system. The coil's secondary fed both >>>>>> plugs >>>>>> in its two-cylinder engine (wasted spark method) which meant no >>>>>> distributor. >>>>> All 17 HP, right? [Joerg is clearly a deux chevaux owner...] >>> Was, it rusted out from underneath me like French cars tend to do. >>> Only 16 horses though. It had a boxer engine with a whopping 421cc. >> >> Wasted spark in a 2-cylinder boxer? >> That's horizontally opposed, but not strictly a boxer. >> Boxers fire opposite cylinders at the same time. >> > > It was only boxer-inspired. This has a little more info under "Engine": > > https://en.wikipedia.org/wiki/Citro%C3%ABn_2CV > >>> Duaphines could also be souped up. >>> >>> https://www.youtube.com/watch?v=eEDOAoY7Wug >> >> Gordini did amazing things with Renault engines. >> The R8 Gordinis were very dominant in rallying, >> and the R15 Gordini was a damn fine car too. > > > Maybe they were involved in the development of the Renault R5 Alpine? > Those were hot cars but the quality wasn't great. They rusted fast.
Pretty sure they were. There's a motor shop in Melbourne set up by a couple of ex Renault-rallying folk that calls itself "Alpine Affaire". They tried to sell me on an Alpine A110 - fibreglass body with a single square section chassis joining the front and rear. Noisy little car, notchy gearbox, so small you can stand by the drivers door and reach over to touch the passenger's window - but if you have the balls for it, faster than almost anything else on a twisty road. This shop was building the 1565cc Renault engines to put out above 180BHP, naturally aspirated, in a sub-600kg car. They had moulds for the A110 bodies too, so they could make spare panels and had even made complete cars. Also I think I meant R17 Gordini, not R15.
On Tue, 01 May 2018 14:38:17 -0400, Neon John <no@never.com> wrote:

>On Mon, 30 Apr 2018 12:25:29 -0400, "tom" <tmiller11147@verizon.net> >wrote: > > >>Was the first solid state regulator used in a generator or alternator? > >I've never seen a solid state regulator used on a generator by an OEM. > >Alternators had solid state regulators by the mid-70s, at least with >some brands. my '75 Datsun 280Z was solid state. I just recently sold >my '68 Plymouth Fury. I bought it in the 90s. As was usual for that >vintage car, the first thing I did was put a box in the truck with >tools and spare parts for all the things that normally go wrong. I >was surprised to find that the aftermarket voltage regulator was solid >state.
My '70 AMC Gremlin had a solid state regulator. It died after a week and we had to walk three miles home at 2:00AM.