Engine probes for other engines

[fabjab]

I am in the final phase of planning my instumentation and need to finalise engine instuments. Your planning indicates engine probes available for other engines in the near future. Can you give any indication of when to expect these ; especially for a Jabiru 6 cilinder engine. :question

 

[dynonsupport]

Many of our probes will just work in other engines; some may require adapters to mate. Others will need completely different connection schemes (i.e. bayonet vs. ring terminal CHT probes). We don't have any firm dates yet for when we'll have other probes.

Right now, a standard EMS package for a carbureted 6 cyl Lycoming contains:

• (1) EMS-D10 instrument
• (6) EGT probes (0 - 2300 degF / 1.25" - 2.50" Hose Clamp)
• (6) CHT probes (0 - 1400 degF / Adjustable Depth Bayonet, 3/8"-24 UNF)
• (1) Manifold pressure sensor (0 - 60 InHg / 1/4" Hose barb)
• (1) Oil pressure sensor (0 - 150 PSI / 1/8"-27 NPT)
• (1) Oil temperature sensor (100 - 240 degF / 5/8"-18 UNF)
• (1) Fuel pressure sensor (0- 30 PSI / 1/8"-27 NPT)
• (1) Carburetor air temperature probe (-50 to 150 degF / 1/4"-28 UNF)
• (1) Shunt for measuring amps (+/- 60 Amps)

With a Jabiru, you may be able to use some of the items above "as is" or with readily available adapters, etc. For instance, our current-sensing shunt can be used in any system, regardless of engine type.

I believe that for Jabirus, you require 12 mm ring terminal CHT probes. Is this true for your particular model? As I mentioned above, we don't have a solid timeline yet on when we'll have the 12 mm probes available. We will definitely update the website and the forum when we know more about that.


Our EGT and CHT probes are standard thermocouples. The EGT's are K type and the CHT's are J type. You can use any EGT or CHT probe that mounts properly on your engine if it's the correct type. The other senders are more specific to our package, but many of them are adaptable.

If you have a list of the sensors your engine needs and how the connections to each sensor are made, we would be happy to help you out further.

 

[john_shutt]

Is the EMS-D10 System able to be adapted to any engine type, e.g. LOM 332 engine and the Titan T 51 Mustange? Regards John Shuttleworth, New Zealand.

 

[dynonsupport]

We are still evaluating what probes and software changes will be necessary to utilize the EMS-D10 with other engines. It's possible that many of our standard sensors and others we work with can be dropped into your system. But many cannot. If you have specific information about your engine that you can pass on, that would help our process along.

 

[john_shutt]

Thanks for your prompt reply. The LOM engine is of an old design. It is an inverted inline 4 engine, fuel injected, with two magnetos. The propeller will probably be a 4blade MT electric. The aircraft will have two fuel tanks mounted in the wings [ low winged monoplane ] Is that the type of information you require? Regards John Shuttleworth.

 

[dynonsupport]

John,
Given your description of the engine, there is no reason that we can't support it. It sounds like a basic aircraft engine.

What we really need to know is what size sender mounts the engine uses for CHT probes, oil pressure senders, etc. The issues that we have with different engines are not the paramaters we measure, but the senders we use to get that information. To figure out how to support an engine, we have to know what kind of senders are used and how they mount to the engine.

 

[john_shutt]

O K, I will get back to you on that. It will take a wee while as the engine is still in USA. Due to the waiting time between ordering and delivery should I order now or wait after I know the engine facts? Thanks for super prompt service. John Shuttleworth.

 

[fabjab]

I will be trying to get a grip with which sensors are needed for the Jabiru 3300 engine next week. You are correct in the statement that the Jabiru engine needs 12mm ring CHT probes, but as stated this is a standard J-type thermocouple. From the documentation that I can see so far for the Jabiru engine, they utilise VDO sensors and gauges as standard. In one of the other forum topics, it seems that Dynon has also chosen VDO sensors. Is it not possible to list the part numbers for the probes that you know will work on this forum or on the website in order to guide the process when customers look at their individual engines? It would also help if the standard installation instructions are available online.

Blue skies,
Carl.

 

[dynonsupport]

Carl,
The EMS installation and user's guides are online. Please go here to download them:
http://www.dynonavionics.com/docs/EMS-D10/EMS_Documentation.html

We can support any J-type thermocouple for CHT, and any K-type EGT thermocouple, so whatever the Jabiru engine uses should work fine.

We currently use VDO pressure senders but not VDO temperature senders. This doesn't mean that we can't use the VDO's, it just means that we need to get a set of them in here so that we can calibrate the instruments to read them correctly.

Until we get sensors in here, we don't know what other sensors work besides the ones we sell. If you have a list of Jabiru VDO sensors or a link to a page that lists them, that would be helpful to us. As far as we could guess right now, VDO pressure sensors should work, but temperature sensors may not.

 

[fabjab]

Again for the Jabiru 3300

EIS states that they use the factory fitted probes on Jabiru engine for Oil Temp and Pressure. Would that mean that because the EMS D10 was designed to be compatable with EIS that these probes will be compatable with the EMS D10?

The oil pressure sensor is also VDO with 1/8" NPT fitting, but range is 5 bar (75psi) and warning light connection for 4 bar (60psi)

Oil temp sensor is VDO with range the same as supplied, but it seems to be the 1/8-27 NPT fitting.

I have the EMS with standard probes and will give feedback as to which probes could be used when we are done with installation.

Blue skies,

Carl.

 

[sonex293]

Any update on when you might have a Jabiru Install Package?

---Michael

 

[bigfatratt(Guest)]

How about more cylinder sensors for those of us with the Jabiru 8 cyl (or for those with radials)
Any word or thought on this. This is the only thing that is holding me back. I'd love to have matching displays.

 

[dynonsupport]

We expect to have sensors for the Jabiru 6 cylinder engines in about 3 months.

The EMS hardware only supports 7 EGT thermocouples. We may design an expansion box in the future to support more cylinders, but we don't have any immediate plans for this.

While not an elegant system, you could install a switch that selected between your cylinders 1-4 and 5-8 if you wanted to.