Subject	In direct injection, under heavy load
Posted by	ZCulture on January 26, 2007 at 1:24 PM
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In Reply To	here is why >> posted by ztunerz on January 26, 2007 at 08:01 AM
Message	, which is when detonation happens, fuel is injected in the intake stroke just like conventional multi-point fuel injection. What you're mentioning about fuel being injected near TDC is done only under light-load conditions to improve ignition efficiency. Your point about fuel vaporization cooling the engine is well made. Direct injection in gasoline engines looks appealing but we just have to wait and see it's reliability/cost etc. Direct injection for gasoline has been around for a while but it was at a lower pressure and didn't allow injection near TDI. High-pressure direct injection for gasoline is new.
Follow Ups	Why can't an NA motor w/ turbos be boosted high? - ZCulture 21:09:30 01/25/07 Higher static compression within the cylinder creates an - Ash's Z 21:20:24 01/25/07 Here's some dynocharts to show some stuff >>> - Ash's Z 21:34:43 01/25/07 The torque at 15psi on the NA looks lower than - AzHeat 14:52:58 01/26/07 so there anyway to change the compression? (n/m) - Heavyarms2050 21:52:27 01/25/07 thicker head gasket - SpecNATT (Houston) 22:09:38 01/25/07 Re: so there anyway to change the compression? - awesom-o 22:11:15 01/25/07 like what ? - ztunerz 08:05:02 01/26/07 Wrist pins, oil pump - awesom-o 10:30:49 01/26/07 Re: Higher static compression within the cylinder creates an - ajmshred 00:01:03 01/26/07 Thanks. I've always enjoyed your posts and - ZCulture 01:42:52 01/26/07 You make is sound like retarded timing is a bad thing? - AzHeat 14:32:12 01/26/07 the 335i has direct injection. - apudapus 23:09:52 01/25/07 Good point.. - ZCulture 01:40:59 01/26/07 You're also talking about car that was designed to do that (n/m) - Broke_as_**** 23:29:39 01/25/07 uh, a 300ZX TT motor doesn't 'put up' over 25 psi - vorpalZ 00:21:49 01/26/07 Thanks... - ZCulture 01:38:51 01/26/07 here is why >> - ztunerz 08:01:13 01/26/07 I don't think we'll ever see aftermarket direct injection - aliaZ 09:38:27 01/26/07 What do you think diesel engine combustion chambers - AzHeat 10:45:56 01/26/07 focus, Mike - aliaZ 11:05:52 01/26/07 Most diesel engine's combustion chambers are in the piston - Tuppidsay 11:47:45 01/26/07 The gasoline engine gets a lot its technology from - AzHeat 12:46:09 01/26/07 I took the Auto/Diesel Technology courses at UTI. - Tuppidsay 18:18:48 01/26/07 In direct injection, under heavy load - ZCulture 13:24:43 01/26/07 also, the wrist pins in the NA are weaker than the TT, - CRAZZEPETE. 08:57:10 01/26/07
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