electronic throttle
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From: Clive on 15 Mar 2010 15:48 In message <3sednTevSOmy3APWnZ2dnUVZ_qSdnZ2d(a)speakeasy.net>, jim beam <me(a)privacy.net> writes >no it's not. there is not a single diesel ever used that gives an >operator direct link to fuel injection - it's all done via a control >module. should we get rid of control on all diesels? of course not. Please tell me why my Toyota SR180 which is a diesel, has been recalled then? -- Clive
From: Clive on 15 Mar 2010 16:14 In message <ts2dncwHgrWW3APWnZ2dnUVZ_uOdnZ2d(a)speakeasy.net>, jim beam <me(a)privacy.net> writes >dude, you're utterly clueless. this is about control systems. diesels >have had control systems from day one. have you any idea /why/ they're >always used? what would you have us do to them? After looking at the workshop manuals for both my 02 Nissan Almera diesel and my 09 Toyota Auris SR180 diesel, I see that both are electronically controlled. My Nissan uses a pump injection system with a primary injection (to reduce the noise) of 180 bar, my Toyota on the other hand uses a common rail injection system with a pressure of 2000 bar. -- Clive
From: Bill Putney on 15 Mar 2010 17:32 clare(a)snyder.on.ca wrote: > On Mon, 15 Mar 2010 06:22:41 -0400, Bill Putney <bptn(a)kinez.net> > wrote: > >> Rodan wrote: >>> This electronic throttle thing is great. If you believe everything that >>> could be invented has already been been invented, do this: Replace >>> something already invented with something else already invented >>> and call it a new invention. >>> >>> This has been successfully done in automobiles by throwing away the >>> familiar throttle cable and replacing it with a whole new system of >>> electromechanical parts;... >> Is it not true that the drive-by-wire systems have a cable connecting >> the accelerator pedal to the first electronic part? If so, a chain is >> only as strong as its weakest link - literally in this case. If that's >> the case, they'd be foolish to say that one benefit of the hi-tech >> solution is the elimination of the cable. I can believe some of the >> claims of better control of engines systems for power and emissions and >> possibly enhanced safety if it's done right, but they should leave out >> the part about eliminating the mechanical linkage. > > > None that I've seen have the cable you mention. Really? SO you're saying there is some position sensor (potentiometer or whatever) built right into the accelerator pedal (shaft, pivot, whatever)? -- Bill Putney (To reply by e-mail, replace the last letter of the alphabet in my address with the letter 'x')
From: clare on 15 Mar 2010 17:47 On Mon, 15 Mar 2010 17:32:37 -0400, Bill Putney <bptn(a)kinez.net> wrote: >clare(a)snyder.on.ca wrote: >> On Mon, 15 Mar 2010 06:22:41 -0400, Bill Putney <bptn(a)kinez.net> >> wrote: >> >>> Rodan wrote: >>>> This electronic throttle thing is great. If you believe everything that >>>> could be invented has already been been invented, do this: Replace >>>> something already invented with something else already invented >>>> and call it a new invention. >>>> >>>> This has been successfully done in automobiles by throwing away the >>>> familiar throttle cable and replacing it with a whole new system of >>>> electromechanical parts;... >>> Is it not true that the drive-by-wire systems have a cable connecting >>> the accelerator pedal to the first electronic part? If so, a chain is >>> only as strong as its weakest link - literally in this case. If that's >>> the case, they'd be foolish to say that one benefit of the hi-tech >>> solution is the elimination of the cable. I can believe some of the >>> claims of better control of engines systems for power and emissions and >>> possibly enhanced safety if it's done right, but they should leave out >>> the part about eliminating the mechanical linkage. >> >> >> None that I've seen have the cable you mention. > >Really? SO you're saying there is some position sensor (potentiometer >or whatever) built right into the accelerator pedal (shaft, pivot, >whatever)? Absolutely. on the VAST majority.. I've seen an aftermarket unit that connected to a standard throttle-body years ago, but I've not seen an OEM system done that way.
From: Bill Putney on 15 Mar 2010 17:52
clare(a)snyder.on.ca wrote: > On Mon, 15 Mar 2010 17:32:37 -0400, Bill Putney <bptn(a)kinez.net> > wrote: > >> clare(a)snyder.on.ca wrote: >>> On Mon, 15 Mar 2010 06:22:41 -0400, Bill Putney <bptn(a)kinez.net> >>>> Is it not true that the drive-by-wire systems have a cable connecting >>>> the accelerator pedal to the first electronic part?... >>> None that I've seen have the cable you mention. >> Really? SO you're saying there is some position sensor (potentiometer >> or whatever) built right into the accelerator pedal (shaft, pivot, >> whatever)? > Absolutely. on the VAST majority.. I've seen an aftermarket unit > that connected to a standard throttle-body years ago, but I've not > seen an OEM system done that way. OK - you just schooled me. Thanks. -- Bill Putney (To reply by e-mail, replace the last letter of the alphabet in my address with the letter 'x') |