Throttle stop testing on a diesel

[Isaac Zachary]

Originally Posted by aerohead

I wasn't aware that this thread existed, and just stumbled across it while digging into the past here at the Aerodynamics Forum, page-10.
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1) It would be technically improper to associate 'throttle stop' testing with any diesel vehicle.
2) Diesel-powered vehicles have an 'accelerator' pedal, not a 'throttle' pedal.
3) As, diesel engines do not have 'throttles.'
4) Diesel engines have no restriction of any kind in their inlet tract.
5) The diesel's pedal is associated with the Robert Bosch fuel injection pump, whether by direct mechanical means, or drive-by-wire, which modulates the 'racking' function of the pump, as mentioned in the most recent post.
6) What might be referred to as 'wide-open-throttle' on a gasoline-powered ICE engine might be compared to 'full-rack' on a diesel.
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7) Any discussion of a 'TPS', or its signal, on a diesel would also constitute an oxymoron, for the same reason as above.
8) A ScanGauge cannot intercept a TPS signal, as one doesn't exist.
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9) Testing, and interpreting data for a supercharged, or turbo-intercooled diesel would be a massive challenge, even in the absence of a ' stopped-rack.'
10) Data collected under 'logic death,' thermal non-equilibrium conditions, and uncorrected to SAE Standard 60-F, 29.92-inches Mercury, would essentially be 'meaningless'.
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11) One current proponent of the' technique', according to the 'math', allowed a 4.39% rpm excursion ( 123-rpms ) as acceptable on his 1991 Toyota DLX 4WD pickup's 2.4-liter IL-4 engine.
* On a 2022 Genesis G80 3.5 AWD, this would allow a 57-rpm allowable test window.
* On a 2023 Lamborghini Huraca'n Technia, an excursion of 285-rpm would be the limit.
Thought I'd mention it.

Do we have to beat a dead stick with a horse?

As long as we understand, do we really need such perfeccionism?

The other day I got called out for saying I charged my 12V battery with a trickle charger. I was told it wasn't a trickle charger and I should never use a trickle charger on a car battery, even though the charger says "Trickle Charger" right on it and on the box it came in from Wal-Mart.

I don't like the term "battery pack" when referred to BEV's since a "battery" is already a series of individual cells put together. "Battery pack" sounds like what AA's and AAA's come in. But I usually don't even mention that I dislike the term when others mention it in referrence to BEV's.

[aerohead]

Originally Posted by freebeard

I left off the [/jk]

I thought I'd found someone to characterize my Lexus electrric axle. On the condition that if they liked it they could buy it, but if they didn't they'd tell me why.

All I got was that it wouldn't deliver power above 35MPH. I asked for your attention at Hot-rodding the Toyota MGR #406. Does it seem reasonable that an SUV AWD axle would only provide power at parking lot speeds, if it has a external oil cooler for trailer towing option?

GrayRaceCat gave it a shot at #407. They admitted they didn't try to spin it.

I ran the numbers for the RX 450h and will post them at the 'Hot-Rodding' thread @ Fossil Fuels.