[Success Story] Sporttrike 1.8l Toyota 1ZZ-FE [microRusEFI]

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Sporttrike
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Re: Sporttrike 1.8l Toyota 1ZZ-FE

Post by Sporttrike »

Sorry that this took so long. This is the trigger shape, recorded with an oscilloscope:
Image
Ignore the weirdness of the cam shape and its voltage offset, that's because of our VR->Hall converter board and the measurement settings.
And here's a sketch of the actual shape:
Image

We're not sure what new information you need though, beyond what https://rusefi.com/forum/viewtopic.php?p=38008#p38008 already provides. Could you elaborate please?

To explain why it took so long, we broke some things and worked on other components in the meantime; for example we now have more or less accurate lambda. Here's some pretty pictures of our progress:



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AndreyB
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Re: Sporttrike 1.8l Toyota 1ZZ-FE

Post by AndreyB »

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Sporttrike
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Re: Sporttrike 1.8l Toyota 1ZZ-FE [microRusEFI]

Post by Sporttrike »

Thanks! Works like a charm without batched injection and wasted spark now.
We tried using vvt but couldn't make it work well yet. Is there a guide for how to set it up properly?

While rebuilding parts of the vehicle we also noticed some small problems with cranking; when the load on the motor is too low, and more generally if it's cranking too fast, it doesn't seem to detect the rotation speed at all. The engine sniffer shows that the signals are detected fine though:

This is about 150 rpm, but both rusefi console and tunerstudio claim it's 0. When cranking for a bit and the rpm dipped low enough temporarily, it was detected fine and the motor started.
mck1117
running engine in first post
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Re: Sporttrike 1.8l Toyota 1ZZ-FE [microRusEFI]

Post by mck1117 »

Can you upload a normal tunerstudio log (with the communication rate set to max) of the problem to rusefi.com/online?
Sporttrike
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Re: Sporttrike 1.8l Toyota 1ZZ-FE [microRusEFI]

Post by Sporttrike »

Hi. It's been a while, sorry that we didn't respond do you sooner. We've been a bit preoccupied since one of us managed to do a rollover with the Trike; thankfully noone got seriously hurt but it required a lot of repairs.

The vehicle is now functional again, and we re-tested with the latest firmware. Here's a log where startup failed: https://rusefi.com/online/view.php?log=1300. When we increase the pressure of our hydraulic pump (thus dampening the engine rotations) it does start though: https://rusefi.com/online/view.php?log=1301
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AndreyB
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Re: Sporttrike 1.8l Toyota 1ZZ-FE [microRusEFI]

Post by AndreyB »

I desperately need help with the following documentation tickets which are extremely relevant here

https://github.com/rusefi/rusefi_documentation/issues/497
https://github.com/rusefi/rusefi_documentation/issues/498
https://github.com/rusefi/rusefi_documentation/issues/499

is there any chance that you would be available to connect the dots between https://github.com/rusefi/rusefi/wiki/All-Supported-Triggers#362 and 4.09 being above 3.5 while for instance 3.171 is below 3.5?
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AndreyB
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Re: Sporttrike 1.8l Toyota 1ZZ-FE [microRusEFI]

Post by AndreyB »

Separate question would be "what is special about this specific engine for gap ratio to be so unusual" meaning "should default value be adjusted or not"
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Sporttrike
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Re: Sporttrike 1.8l Toyota 1ZZ-FE [microRusEFI]

Post by Sporttrike »

We investigated a bit; the "3" gap coincides with a compression stroke of the engine and our battery was pretty small, which means the gap can be a lot bigger than it should (even with a second battery connected with jumper cables though). We swapped out the battery for a bigger and newer one and while there's still individual trigger errors from time to time, it's a lot better now.
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AndreyB
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Re: Sporttrike 1.8l Toyota 1ZZ-FE [microRusEFI]

Post by AndreyB »

Interesting stuff, thank you for the follow-up!
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