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Drive belt on the 2.5L engine

jeffdeq

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I have a question for the hybrid “tech” experts out there. I have been trying to find more detailed, under the hood photos of the 2.5L engine. While I was perusing the Maverick Owner’s manual I could only find the illustration for the drive belt diagram for a 2.0L EB, (page 310). There are no references to a drive belt on a 2.5L Hybrid engine.

Ford Maverick Drive belt on the 2.5L engine 28AA34CF-2D43-4EF8-9440-C5DCD287615E


So I looked up the 2021 2.5L hybrid Escape but found no reference to the hybrid engine drive belt there either. The only illustration I could find was the 1.5L and 2.0L engines (page 345).

Ford Maverick Drive belt on the 2.5L engine 2760D4FC-3FF9-4642-B500-FA6839D07640
i

So I looked up the 2.0L hybrid engine in a Fusion hybrid. There were no engine drive belt illustrations or references for a hybrid engine. My question is, is there a drive belt on the 2.5L hybrid engine? The reasoning behind this inquiry is does the engine use an alternator to recharge the chassis battery under the rear seat? Does the starter motor used to start the ICE (2.5L) also recharge the chassis battery? From what I have read, the traction motor does the recharging of the hybrid battery during braking regeneration.

Let the discussions begin.
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abjbrtd

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There's nothing for a drive belt to do.

Everything runs off of the high voltage battery, nothing but the computers run off of the 12v battery.
 
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jeffdeq

jeffdeq

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There's nothing for a drive belt to do.

Everything runs off of the high voltage battery, nothing but the computers run off of the 12v battery.
Okay, what drives the air conditioner compressor?
 

bombast

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I'm told there's a drive chain, but the only thing it does is maintain engine timing. Everything else that's traditionally belt driven - AC, water pump, whatever - Is purely electrical. The reason there's no diagram in the book for the chain is because it is not driver serviceable.

Drive chains are great by the way. I have a 2005 Impala where everything else is going to shit but the belts 100% perfect.

Okay, what drives the air conditioner compressor?
The electrical system.
 

LtCasual

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Maybe somewhat unrelated question, but since we're talking normal engine vs hybrid engine. How does the heat work on the hybrid? Is it electrical as well, or standard engine heat/heater core setup? Just curious how remote start will work in the winter time.
 

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clavicus

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Okay, what drives the air conditioner compressor?
The high voltage battery


Maybe somewhat unrelated question, but since we're talking normal engine vs hybrid engine. How does the heat work on the hybrid? Is it electrical as well, or standard engine heat/heater core setup? Just curious how remote start will work in the winter time.
Heat in the hybrid is 100% from the ICE, there is no electric heating element for the cabin. In the winter, remote start will turn on the ICE. But probably shut it off an on as needed while you’re parked, after you’ve reached your automatic temperature setting.
 

bombast

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Maybe somewhat unrelated question, but since we're talking normal engine vs hybrid engine. How does the heat work on the hybrid? Is it electrical as well, or standard engine heat/heater core setup? Just curious how remote start will work in the winter time.
Assuming the Maverick is like previous hybrids, it will still having a heating core. Some hybrids have electrical elements in the heater core, but from what I've read their purely there for maintaining heat the ICE generated during downtime. They cannot drive the system on their own.
 

NewBernWolf

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Maybe somewhat unrelated question, but since we're talking normal engine vs hybrid engine. How does the heat work on the hybrid? Is it electrical as well, or standard engine heat/heater core setup? Just curious how remote start will work in the winter time.
I don't have remote start on my current hybrid, but before I retired, I regularly went out and started the car to warm up the interior of my car 5 or 10 minutes before leaving. I warms up just like any other vehicle.
 
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jeffdeq

jeffdeq

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Maybe somewhat unrelated question, but since we're talking normal engine vs hybrid engine. How does the heat work on the hybrid? Is it electrical as well, or standard engine heat/heater core setup? Just curious how remote start will work in the winter time.
In the Maverick owners manual there is a page that describes the coolant caps for the high and low level coolant openings. I believe the hybrid battery is water cooled with the same 50/50 mix antifreeze that the engine uses. It can be found on pages 302, 304.
 
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jeffdeq

jeffdeq

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I don't have remote start on my current hybrid, but before I retired, I regularly went out and started the car to warm up the interior of my car 5 or 10 minutes before leaving. I warms up just like any other vehicle.
The FordPass app will do that now from inside your home on your smart phone.
 
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jeffdeq

jeffdeq

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I found this article at the Ford Authority website.

https://fordauthority.com/fmc/ford-...ratec-engine-family/ford-2-5l-duratec-engine/

2.5L Duratec Engine

The Duratec 25, also known as the Mazda L engine, is a 2.5-liter naturally aspirated four-cylinder from Ford Motor used to power midsize cars, cargo vans and sport utility vehicles, also known as SUVs. Featuring a dual overhead cam (DOHC) design, in an inline configuration, the Ford Duratec 25 engine has been part of the Ford Duratec engine family since 2008, but was first introduced on the North-American market in 2009.

This engine was developed in partnership with Mazda (part of the MZR family), but under Ford ownership, which explains why it was used in a variety of different vehicle applications from one brand to the next. Such variations also mean that a slew of different technologies were grafted onto the engine as it evolved, things like the Atkinson cycle, hybrid technology and adaptive knock control for improved fuel efficiency. The Ford Duratec 25 engine powers the following vehicles:

  • Ford Escape
  • Ford Fusion
  • Ford Transit Connect
  • Lincoln MKZ
Duratec 25
The Duratec 25, or Duratec 2.5L I-4, is an evolution of the Duratec 23. 'Duratec 25' should not be confused with the similarly named 2.5L V6 Ford Duratec. The new Duratec 25 is an inline 4-cylinder engine design that is identical to the Mazda MZR 2.5L. The bore and stroke have increased to 89mm x 100mm and as such now displaces 2488cc | 151ci. Power has been increased to 171hp@6000rpm and 171lb-ft@4500rpm torque. A Hybrid Duratec 25 will be replacing the Hybrid Duratec 23.

Fuel saving features include adaptive knock control and aggressive deceleration fuel cutoff.[3]


Overview

MetricValue
Engine familyDuratec
Displacement2.5 liters
AspirationAtmospheric
Configuration & cylindersInline configuration, four cylinders
Vehicle engine orientationTransverse
Valve configurationDual-overhead cam (DOHC)
Assembly sitesDearborn, Michigan, USA / Chihuahua, Mexico / Hiroshima, Japan
PredecessorMazda F engine
SuccessorFord EcoBoost
MetricValue
Bore89 mm
Stroke100 mm
Compression ratio9.7:1
Max power @ RPM175 hp @ 6,000 rpm
Max torque @ RPM172 lb-ft @ 4,500 rpm
Cylinder headAluminum
Cylinder blockAluminum
Camshaft driveChain
VehicleTransmissionDrive WheelsPower@ RPMTorque (lb-ft) @ RPM
Ford Escape (2009 - 2019)Six-speed automaticFWD / AWD170 @ 6,000167 @ 4,000
Ford Fusion (2010 - 2013)Six-speed manual / Six-speed automaticFWD175 @ 6,000172 @ 4,500
Ford Fusion Hybrid (2010 - 2013)Continously variable automatic (CVT)FWD156 @ 5,550 (191 hp combined)136 @ 4,000
Ford Fusion (2013 - 2019)Six-speed automaticFWD175 @ 6,000175 @ 4,500
Ford Transit Connect (2014 - 2018)Six-speed automaticFWD169 @ 6,000171 @ 4,500
Lincoln MKZ Hybrid (2011)Continously variable automatic (CVT)FWD156 @ 5,550 (191 hp combined)136 @ 4,000
Mercury Milan (2010 - 2013)Six-speed automaticFWD175 @ 6,000172 @ 4,500
Mercury Milan Hybrid (2010 - 2011)Continuously variable automatic (CVT)FWD156 @ 5,550 (191 hp combined)136 @ 4,00

Ford Maverick Drive belt on the 2.5L engine 32ADE906-65AF-4E8C-99F9-7FF281BC427C

Ford Maverick Drive belt on the 2.5L engine A1BB2C1C-2AE4-4F9F-8C9B-7BF7AF688574


Ford Maverick Drive belt on the 2.5L engine BAE47E35-B96F-4DF6-8412-95BA4F39BA13


Ford Maverick Drive belt on the 2.5L engine C5E5DF78-BD20-476C-8CAB-8D073D726383
 
Last edited:

STARCOMMTREY1

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I found this article at the Ford Authority website.

https://fordauthority.com/fmc/ford-...ratec-engine-family/ford-2-5l-duratec-engine/

2.5L Duratec Engine

The Duratec 25, also known as the Mazda L engine, is a 2.5-liter naturally aspirated four-cylinder from Ford Motor used to power midsize cars, cargo vans and sport utility vehicles, also known as SUVs. Featuring a dual overhead cam (DOHC) design, in an inline configuration, the Ford Duratec 25 engine has been part of the Ford Duratec engine family since 2008, but was first introduced on the North-American market in 2009.

This engine was developed in partnership with Mazda (part of the MZR family), but under Ford ownership, which explains why it was used in a variety of different vehicle applications from one brand to the next. Such variations also mean that a slew of different technologies were grafted onto the engine as it evolved, things like the Atkinson cycle, hybrid technology and adaptive knock control for improved fuel efficiency. The Ford Duratec 25 engine powers the following vehicles:

  • Ford Escape
  • Ford Fusion
  • Ford Transit Connect
  • Lincoln MKZ
Overview

MetricValue
Engine familyDuratec
Displacement2.5 liters
AspirationAtmospheric
Configuration & cylindersInline configuration, four cylinders
Vehicle engine orientationTransverse
Valve configurationDual-overhead cam (DOHC)
Assembly sitesDearborn, Michigan, USA / Chihuahua, Mexico / Hiroshima, Japan
PredecessorMazda F engine
SuccessorFord EcoBoost
MetricValue
Bore89 mm
Stroke100 mm
Compression ratio9.7:1
Max power @ RPM175 hp @ 6,000 rpm
Max torque @ RPM172 lb-ft @ 4,500 rpm
Cylinder headAluminum
Cylinder blockAluminum
Camshaft driveChain
VehicleTransmissionDrive WheelsPower@ RPMTorque (lb-ft) @ RPM
Ford Escape (2009 - 2019)Six-speed automaticFWD / AWD170 @ 6,000167 @ 4,000
Ford Fusion (2010 - 2013)Six-speed manual / Six-speed automaticFWD175 @ 6,000172 @ 4,500
Ford Fusion Hybrid (2010 - 2013)Continously variable automatic (CVT)FWD156 @ 5,550 (191 hp combined)136 @ 4,000
Ford Fusion (2013 - 2019)Six-speed automaticFWD175 @ 6,000175 @ 4,500
Ford Transit Connect (2014 - 2018)Six-speed automaticFWD169 @ 6,000171 @ 4,500
Lincoln MKZ Hybrid (2011)Continously variable automatic (CVT)FWD156 @ 5,550 (191 hp combined)136 @ 4,000
Mercury Milan (2010 - 2013)Six-speed automaticFWD175 @ 6,000172 @ 4,500
Mercury Milan Hybrid (2010 - 2011)Continuously variable automatic (CVT)FWD156 @ 5,550 (191 hp combined)136 @ 4,00

32ADE906-65AF-4E8C-99F9-7FF281BC427C.jpeg

A1BB2C1C-2AE4-4F9F-8C9B-7BF7AF688574.jpeg


BAE47E35-B96F-4DF6-8412-95BA4F39BA13.jpeg


C5E5DF78-BD20-476C-8CAB-8D073D726383.jpeg
I don't think the hybrid uses this engine. Compression ratio alone is way off.
 
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jeffdeq

jeffdeq

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I don't think the hybrid uses this engine. Compression ratio alone is way off.
Variable cam timing can change compression ratios. This might not be the exact 2.5L in the Maverick but I would not be upset if a Ford tech would contribute some Informative links to this thread. I do believe this engine has some similarities to the hybrid engine now being used. It was the engine used in past hybrids.
 

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There is no drive belt just a harmonic balancer, all of the systems are electric, there is no starter as the ECvt takes care of that and all the charging needs. Don’t have all the details basically the 2.5 motor doesn’t have anything attached to it but the ECvt.
 

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There's nothing for a drive belt to do.

Everything runs off of the high voltage battery, nothing but the computers run off of the 12v battery.
Power steering is still low voltage. I believe the electric water pump is only 12v as well. Really only the Inverter->Transaxle and A/C run at high voltage.
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