Belt-driven starter?

[Cobra427]

My Powerboost transitions from electric drive to ICE so smoothly that I thought Ford must be using the hybrid drive motor as a starter. Nope, the specs note a 'belt-driven starter used for the starter motor and water pump.' OK, so where is it? The drawings of the bare chassis indicate it is engine-mounted on the driver's side somewhere, but it sure is hard to find. Clues anyone? Starter AND water pump? Odd combination.

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[FordConvert]

My Powerboost transitions from electric drive to ICE so smoothly that I thought Ford must be using the hybrid drive motor as a starter. Nope, the specs note a 'belt-driven starter used for the starter motor and water pump.' OK, so where is it? The drawings of the bare chassis indicate it is engine-mounted on the driver's side somewhere, but it sure is hard to find. Clues anyone? Starter AND water pump? Odd combination.

Man, I would really love for someone who knows to answer this one. I'm a bit mystified by the "Belt driven starter is used for water pump and belt starter motor" in Ford's marketing about the PB. Are the "belt driven starter" and "belt starter motor" different components, or the same thing? Does the water pump operate in EV mode?

 

[PFD664]

On one of Ford‘s pictures of the 3.5 Powerboost motor I noticed the alternator looked really large, like fire truck alternator size, so maybe it does double duty as a starter/generator ? Maybe someone who has some intimate knowledge on this could clarify.

 

[uavmx]

On one of Ford‘s pictures of the 3.5 Powerboost motor I noticed the alternator looked really large, like fire truck alternator size, so maybe it does double duty as a starter/generator ? Maybe someone who has some intimate knowledge on this could clarify.

In my background of aviation, starter/generators are very common....could be what they did

 

[FordConvert]

Why would there need to be such a large starter/generator with the electric motor in the hybrid transmission? I assumed all the charging was done with that component...

 

[Pedaldude]

https://www.f150gen14.com/forum/threads/powerboost-rough-charging-idle.4912/post-80989

 

[FordConvert]

https://www.f150gen14.com/forum/threads/powerboost-rough-charging-idle.4912/post-80989

Yeah, I found that post but it didn't explain the weird circular description of "belt driven starter is used for water pump and belt starter motor"

 

[Pedaldude]

It's not that weird when you consider that the marketing guys writing the ad copy have no idea what they're talking about.

Whoever's job it was to take notes when the engineering department did their presentation must have zoned out when it came time to discuss the belt driven starter/alternator.

The guys that put together the brochures have as much to do with the trucks as the people that made the box art for Atari had to do with the games.

Which is why there's often some disconnect or bad translation in the promotional material. It's also why the salesmen that the manufacturers have doing press conferences sometimes just pull shit out of their ass when they don't have an answer for something. Luckily, Ford is pretty good with having the actual dudes involved with development at some of the press junkets.

 

[wayfarer556]

This is how the Service Manual describes the process.

 

[PFD664]

Hmmm, so basically we have 3 means of starting the truck…”Pedaldude” thanks for that link, interesting clips on the replacement prices, I’m definitely getting the Ford ESP Premium Care…

 

[FordConvert]

It would be interesting to know under what circumstances each of the three engine-starting strategies are used.

As for the larger starter generator, if all models have this size unit, maybe that's how they all provide 2kW power at the plugs, even the non-PB models.

 

[Pedaldude]

...if all models have this size unit, maybe that's how they all provide 2kW power at the plugs, even the non-PB models.

One way to find out is to get the VIN of a truck with Propower and see which alternator shows up in Parts.Ford.Com, the diagrams and descriptions will probably improve over time. I have been having trouble looking things up for the 2021s compared with when I was looking for a used truck.

Hmmm, so basically we have 3 means of starting the truck…”Pedaldude” thanks for that link, interesting clips on the replacement prices, I’m definitely getting the Ford ESP Premium Care…

You are welcome! The three different starters also could explain why people are noticing varying degrees of smoothness or lack thereof when it comes to the ICE segment engagement. The parts prices might come down as people start actually needing parts. The core price for the alternator/starter is pretty
low, so the part can't be that special.

 

[wayfarer556]

The diagram I posted is showing the mechanism that does the hybrid start/stop while on the move. There's no physical starter that's engaged, which is why you don't hear a starter sound.

I imagine that the other starters are for regular engine startup from off, or a backup starter that uses the 12v battery and not the HEV battery.

 

[Jloyd98]

The diagram I posted is showing the mechanism that does the hybrid start/stop while on the move. There's no physical starter that's engaged, which is why you don't hear a starter sound.

I've had my Powerboost for 4 days now and was sitting in it tonight for quite awhile in accessory mode. I hit the button again to back it out of the garage, and it cranked over the gasoline motor and sounded just like my 2020 3.5 ecoboost cranking. It was odd because I hadn't heard it ever crank up to this point, so I shut it off and started it again, and once again it cranked over to start. I drove it around and charged it back up and now its back to silent electric "ready".

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