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Old 09-30-2019, 09:46 AM   #921
tall boy

Name: tall boy
Title: Too Much Time
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So last pull of this year. Did look like we found some more power with changing injector timing a bit but need more boost on this machine and can not work out what turbo?
Looking into a Garrett 88mm inducer but need something like a 120mm or 130mm inducer turbine side with a 0.8A/R TH. Or maybe only possible to use a smaller turbine wheel.

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Old 10-13-2019, 07:36 AM   #922
tall boy

Name: tall boy
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Real fun project to support this from Dieselmeken AB and there Mercedes OM648 engine.

They build some insane big injectors and CP pump for this engine. Think it’s idle on around 5 microseconds if you take off the injector dead time to open the injector so idle can be a bit on off sometimes but yes engine makes fantastic power and currently running a S369SX-E turbo boosting up intake air pressure.

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Old 10-13-2019, 12:16 PM   #923
jasonc

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That little thing is bad ass. What rpms was it turning up to in that vid?
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Old 10-13-2019, 02:38 PM   #924
tall boy

Name: tall boy
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Quote:
Originally Posted by jasonc View Post
That little thing is bad ass. What rpms was it turning up to in that vid?
For now it sets @ 5500Rpm
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Old 10-20-2019, 03:34 AM   #925
tall boy

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Something we have been working on for some time and yes this axle it’s electrical but we can also put the Smech Grears in to a gearbox driven of a diesel engine for example.
This axle has two E motor and delivers 220Kw nominal and 460Kw peak power and total weight of only 40Kg for 2 E motors and in lowers gear it pulls 16 tons on nominal power.
Have to have this axle running next year same time on a hydrogen power semi truck but it can be any combination most likely it will be diesel and battery power hybrid for long distance use. The idea behind the hybrid with internal combustion engines is that the combustion engine runs on max efficiency all the time so no extra fuel use to keep the DPF and SRC up to temperature on low load. Battery power will be used for acceleration and deceleration power recovery or uphill and downhill same story to get your energy back while going downhill so in all run more efficient. Other options will be on applications with a large drive train like 8x8 fire tender on airports where 800 to 1000Kw is needed for fast response time so good acceleration is a must but more payload due to less space needed for the drive train is also very welcome same as independent control between the drive train and fire pumps for example.

Smech Grear is a automatic gearbox and it’s mechanical shifting and your able to shift under full power and there is one running with this gearbox on a farm stock pulling tractor.

Smesh-E-Axle Smesh-E-Axle

Click the image to open in full size.
Click the image to open in full size.
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Old 11-09-2019, 07:05 AM   #926
tall boy

Name: tall boy
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Brands Hatch last truck race weekend of the year 2019

Normally you do all your upgrades during the winter break but no we where there early this year able to test them last weekend on Brands Hatch.

So what have we done? B division trucks. Slam some bigger injectors into the D13 Volvo engine and gain some more power the easy way.
Bint racing with there very old and heavy but bullet prove Detroit 60 series engine still makes loads of power but best way to explain how is bigger is not better but this has a load to do with the cam profile used in these engines and how to set-up your injectors.

A division trucks. Well gain some lose some. Scania engine we testes some things on the fuel system. Point is it works well but now the engine spools the turbo so fast and hard as we now run short of fuel form low to top end and the truck it self gets harder to handle dos not provide the stability to put all this power on the tarmac. Bigger picture for the Scania engine is that we are well on our way to build a new rally truck with a Alison 4000 gearbox and yes do not think this AT can handle the toque well of the Scania engine but turning power down is a lot easier than making more power and plan is to run the AT with the lockup on all the time giving it the feeling of a MT gearbox so fast turbo spool-up will be great to have.

MAN D26 engine. Sometimes you discover new things as a simple switch not active of connected and when this dos work the clutch is unable to hold the engine torque so you run of pole on the starting grid ending up 3e place on last race. But yes told the customer to use an upgraded pressure plate on the clutch. Must say some of the engine management systems and engines for A division trucks are complicated. There is a lot of driver assist things you can adjust with switches helping you to reduce power per gear for example so for most race drivers it takes time to adjust to this finding out what setting work best for them sometimes even running on a lower power setting without them knowing so thatís where data logging comes in so you can find out and tell the driver what to do or next race. Essentially every A division team should a have a race engineering for driver support on and of the race track telling him what to do.


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