GS450H Discussion

[wovenrovings]

Yes I saw that on the wiki but I don't think a GS350h actually exists.. so it might be a typo.

And I have searched everywhere but all I can see is a mention of Damien saying he will try one, one day. So was just hopeful that there was something I had missed.

[Kevin Sharpe]

Yes I saw that on the wiki but I don't think a GS350h actually exists.. so it might be a typo.

No idea...

And I have searched everywhere but all I can see is a mention of Damien saying he will try one, one day. So was just hopeful that there was something I had missed.

BEXUS is using the GS450H transaxle and inverter. If you have a look at some of the development videos you might find an answer to your question. I'll also try and find the inverter part number on LEXI when I'm at the workshop

[Kevin Sharpe]

I'll also try and find the inverter part number on LEXI when I'm at the workshop

Here is the label from our GS450H (2006 car iirc);

[xp677]

There is a 2013 gs450h coming up for salvage auction near me. Has anyone here had a go at hacking the inverters in these?

Please read through the forum, wiki and review the SuperYacht ('BEXUS') project;

viewtopic.php?f=11&t=96

Edit: a search on the wiki says the G92A030020 is from a GS350H not a GS450H

2012+ GS is a different generation, with a different inverter.

No current work done on the control side of this. Likely same hardware as the Gen 1 GSh, but different data packets. Best to buy the whole car and pull the data yourself.

[TFirenza]

does anyone have experience with G9201-30010 its a 2008 RHD gs450h , its from the same period so I wouldn't expect it to be an issue but it also isn't listed on the hardware wiki.

[wovenrovings]

Thanks xp677, exactly what I was looking for.

[xp677]

does anyone have experience with G9201-30010 its a 2008 RHD gs450h , its from the same period so I wouldn't expect it to be an issue but it also isn't listed on the hardware wiki.

As far as we know, all the "square" inverters from the Gen1 GS450h/Camry are the same when it comes to control.

The Camry inverters have different connectors, the LHD inverters have the ports on the other side (mirrored casing), but when it comes to using them, they are all the same.

I've ran both a 2006 and a 2010 RHD GS450h inverter, no issues.

[TFirenza]

okay thankyou, I had a hunch that might be the case

[AlexD]

Im currently shopping around for a setup, having got a few prices back from some places, it seems one of the big costs is the Oil Pump, has anyone successfully used another more general purpose pump? I could easily mill an adaptor plate to fit the transmission.

[Jack Bauer]

If you do then please share the design.
You could try one of these : https://www.ebay.co.uk/itm/Genuine-BMW- ... Swl7pearYz

[AlexD]

If you do then please share the design.
You could try one of these : https://www.ebay.co.uk/itm/Genuine-BMW- ... Swl7pearYz

They are good pumps and typically last ~100k miles, rebuild kits are readily available too. I had to rebuild the one on my M5, they get dirty inside. I will look into this thanks. I was not sure if there was a required pressure that had to be sustained.

[mdrobnak]

If you do then please share the design.
You could try one of these : https://www.ebay.co.uk/itm/Genuine-BMW- ... Swl7pearYz

Those seem to be a much more reasonable price - but some of them say SMG pump if searched for on the US site. Usually that is Pentosin CHF 11S that is flowing through that, I'm not sure if there would be any compatibility issues. But if so, $60 - 100 is better than another $700 just for a pump!

[Jack Bauer]

Someone needs to just give it a shot (won't be me sorry!).
For those interested in oil pressure here's one from the back catalog :

[AlexD]

The viscosity of the fluids doesn't seem to be massively different from what I can tell.

My only consideration is the SMG Pump does not run continuously on the S85 V10, the SMG only uses pressure to actuate the clutch and shift gears

[Jack Bauer]

Ah, I thought what I linked to were engine oil pumps for the S85?

[AlexD]

Ah, I thought what I linked to were engine oil pumps for the S85?

You are absolutely right - my apologies, its one of the two scavenge pumps for the partial dry sump, at a glance it looked similar to SMG Motor. I will ask my friend who is breaking his S85 if he has a one for mates rates

EDIT: After checking RealOEM it looks like this pump is also used on the transmission to circulate the transmission fluid to the cooler, should be a good candidate on paper.

[Mobert]

Oil pump flange on the transmission,

[mdrobnak]

Ah, I thought what I linked to were engine oil pumps for the S85?

You are absolutely right - my apologies, its one of the two scavenge pumps for the partial dry sump, at a glance it looked similar to SMG Motor. I will ask my friend who is breaking his S85 if he has a one for mates rates

EDIT: After checking RealOEM it looks like this pump is also used on the transmission to circulate the transmission fluid to the cooler, should be a good candidate on paper.

Ah, hence my confusion as well. Good to see it is definitely flexible.

Good find, Damien. (and now we have another BMW part for BMW conversions )

-Matt

[ggeter]

Have any of you published your 450h shift code? I see the parameters and setup in Damien's base, but wondering if any of you have forked it?

When writing code for this, don't forget to set your MG1 and MG2 torque to zero before the shift, and then ramp this back up (don't reapply it all instantly) once the shift is complete.

I'd recommend doing the shifts at around 5000rpm for MG1, so I'd try upshift at 6000 and downshift at 4000. Ratios are 1.9 and 3.9 so this will keep MG1 within 12000rpm.

If SP is purely a line pressure solenoid, then likely this can be ignored, and the pressure controlled with the oil pump speed instead. Or maybe a combination of the two for fine control.

It might be worth looking at what SP does during shifts, likely pressure will be momentarily increased during a shift. Maybe this is a use for SP. I noticed the oil pump controller is a bit slow to react to changing speeds.

[xp677]

As far as I'm aware, this code has not yet been written.

[Gigas]

Just a curious question- but what foot pedal are people using with this gearbox and vcu

[steveknox]

I'm using an RX8 pedal, as I'm converting an rx8. They also happen to work well and are very cheap and readily available

[Gigas]

I'm using an RX8 pedal, as I'm converting an rx8. They also happen to work well and are very cheap and readily available

like this one?
https://www.ebay.com/itm/Mazda-RX-8-RX8 ... .l4275.c10

seems pretty good to me though i'd need to figure pinout

[steveknox]

That's the one! The pinout (front to back as you look at the pedal) is:

5v
Gnd
Ref 1
5v
Gnd
Ref 2

There are 2 reference signals, for redundancy.

[nkiernan]

Just a curious question- but what foot pedal are people using with this gearbox and vcu

Gigas,
Just got to run two gearboxes side by side today. Used a BMW pedal on one and a Ford Transit Connect pedal on the other. Transit worked with no mods to the code, but the BMW pedal needed some tweaking.

With the v3 code, the BMW pedal gave values of 98 to 1827 and the Ford pedal gave 0 to 1437. In the 'get_torque()' function in the code, the pedal values can be tuned to suit the pedal to get the full range.

I just added the line: SerialDEBUG.println(ThrotVal); in the void Loop() function and watched the serial monitor as I used the pedal to see that ranges they were giving out.

Tried to upload a photo for info but new to the forum and getting an attachment error, so have to figure that out later!