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dcb · 02-06-2009, 05:36 AM

Hmm... the piezo fuel line tach sensor approach is looking better.

You can derive rpm. You can probably also tell how long the pulse was, which is a function of rpm and control sleeve position (effectively stroke). Still need to determine the range but should be able to get a relative reading anyway.

fuel delivered = rpm * pulse duration * k

02-06-2009, 05:36 AM	#16 (permalink)
dcb needs more cowbell Join Date: Feb 2008 Location: ÿ Posts: 5,032 pimp mobile - '81 gs 250 t 90 day: 96.29 mpg (US) schnitzel - '01 Golf TDI 90 day: 53.56 mpg (US) Thanks: 156 Thanked 259 Times in 203 Posts	Hmm... the piezo fuel line tach sensor approach is looking better. You can derive rpm. You can probably also tell how long the pulse was, which is a function of rpm and control sleeve position (effectively stroke). Still need to determine the range but should be able to get a relative reading anyway. fuel delivered = rpm * pulse duration * k __________________ WINDMILLS DO NOT WORK THAT WAY!!! Last edited by dcb; 02-06-2009 at 05:52 AM..