# Hybrid question: How does an electric car motor assist the gasoline motor?

**URL:** <https://community.cartalk.com/t/hybrid-question-how-does-an-electric-car-motor-assist-the-gasoline-motor/194396>\
**Category:** General Discussion\
**Created:** [February 18, 2024, 9:21pm UTC](https://community.cartalk.com/t/hybrid-question-how-does-an-electric-car-motor-assist-the-gasoline-motor/194396 "2024-02-18T21:21:46Z")\
**Posts on this page:** 13\
**Page:** 1

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**Author:** ![George\_San\_Jose1](https://avatars.discourse-cdn.com/v4/letter/g/e5b9ba/32.png) [@George\_San\_Jose1](https://community.cartalk.com/u/George_San_Jose1)\
**Post date:** [February 18, 2024, 9:21pm UTC](https://community.cartalk.com/t/hybrid-question-how-does-an-electric-car-motor-assist-the-gasoline-motor/194396/1 "2024-02-18T21:21:47Z")

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I got to wondering how this actually works

- Does the electric motor produce add’l force on the gasoline motor’s crankshaft?
- Does the electric motor only power the rear wheels while the gasoline motor only the front wheels?
- Do both the gasoline motor and the electric motor power work together to power a separate gadget, which in turns powers the wheels?

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**Author:** ![old\_mopar\_guy](https://avatars.discourse-cdn.com/v4/letter/o/6bbea6/32.png) [@old\_mopar\_guy](https://community.cartalk.com/u/old_mopar_guy)\
**Post date:** [February 18, 2024, 10:45pm UTC](https://community.cartalk.com/t/hybrid-question-how-does-an-electric-car-motor-assist-the-gasoline-motor/194396/2 "2024-02-18T22:45:12Z")

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[Hybrid Synergy Drive - Wikipedia](https://en.m.wikipedia.org/wiki/Hybrid_Synergy_Drive#:~:text=The%20HSD%20drive%20works%20by,on%20the%20internal%20combustion%20engine).

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**Author:** ![Mustangman](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/mustangman/32/44130_2.png) [@Mustangman](https://community.cartalk.com/u/Mustangman)\
**Post date:** [February 18, 2024, 11:03pm UTC](https://community.cartalk.com/t/hybrid-question-how-does-an-electric-car-motor-assist-the-gasoline-motor/194396/3 "2024-02-18T23:03:44Z")

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Both your first and second descriptions. But reverse front and rear. The motor goes on the front to alllow more energy capture from regenerative braking.

There are parallel and series hybrids meaning the motor generator can be in series with the engine or in parallel. The entire driveline is computer controlled to blend both systems to work as one.

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**Author:** ![texases](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/texases/32/862_2.png) [@texases](https://community.cartalk.com/u/texases)\
**Post date:** [February 18, 2024, 11:52pm UTC](https://community.cartalk.com/t/hybrid-question-how-does-an-electric-car-motor-assist-the-gasoline-motor/194396/4 "2024-02-18T23:52:59Z")

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Many are FWD only. Others have the gas engine power the front with two electric motors, one front and one rear. There are many different arrangements.

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**Author:** ![Purebred](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/purebred/32/46796_2.png) [@Purebred](https://community.cartalk.com/u/Purebred)\
**Post date:** [February 19, 2024, 11:27am UTC](https://community.cartalk.com/t/hybrid-question-how-does-an-electric-car-motor-assist-the-gasoline-motor/194396/5 "2024-02-19T11:27:54Z")

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> **[The 2024 Corvette E-Ray | Electrified Performance Vehicle | Chevrolet](https://www.chevrolet.com/performance/corvette/e-ray)**
>
> Explore the 2024 Corvette E-Ray, the apex electrified sports car. It combines a hybrid powertrain that delivers 650 hp & a 0-60 time of 2.5 seconds. Design yours today!

This is how Ford should have created the Mach-E Mustang, though no room for the electric drive unit in a front engine car.

George, the E-Ray would be a good candidate to replace your Corolla.

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**Author:** ![Mustangman](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/mustangman/32/44130_2.png) [@Mustangman](https://community.cartalk.com/u/Mustangman)\
**Post date:** [February 19, 2024, 11:41am UTC](https://community.cartalk.com/t/hybrid-question-how-does-an-electric-car-motor-assist-the-gasoline-motor/194396/6 "2024-02-19T11:41:18Z")

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> [@Purebred](#):
>
> though no room for the electric drive unit in a front engine car

That is how Toyota does it. Motor and engine both in the front of the car with FWD.

Or do you mean the Mach E should have been a hybrid real Mustang? Front engine, AWD hybrid?

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**Author:** ![Purebred](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/purebred/32/46796_2.png) [@Purebred](https://community.cartalk.com/u/Purebred)\
**Post date:** [February 19, 2024, 11:50am UTC](https://community.cartalk.com/t/hybrid-question-how-does-an-electric-car-motor-assist-the-gasoline-motor/194396/7 "2024-02-19T11:50:57Z")

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> [@Mustangman](#):
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> Or do you mean the Mach E should have been a hybrid real Mustang? Front engine, AWD hybrid?

Yes, a real Mustang GT, add the front e-drive unit to creat the Mach-E. Not the SUV Ford offers as the Mach-E.

I was not aware Toyota had such an arrangement.

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**Author:** ![Mustangman](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/mustangman/32/44130_2.png) [@Mustangman](https://community.cartalk.com/u/Mustangman)\
**Post date:** [February 19, 2024, 12:02pm UTC](https://community.cartalk.com/t/hybrid-question-how-does-an-electric-car-motor-assist-the-gasoline-motor/194396/8 "2024-02-19T12:02:22Z")

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> [@Purebred](#):
>
> I was not aware Toyota had such an arrangement.

Pretty much the standard way to do FWD hybrids. But, it can be a bit of a packaging headache!

You really need the motor generator on the front wheels since they create 70+ % of the stopping power for regen capture. That is the primary way you get savings from hybrids in the city cycle. The stop-and-go cycle pushes charge back into the battery for later use to accelerate the car again. It makes adding AWD to a FWD car very easy by adding a motor to the rear but you don’t get much regen from it. Flip it around, like the mid-engine Corvette E-Ray and you get the best of both worlds… AWD and great regen braking.

Would have been a MAJOR packaging nightmare (and likely impossible) to make a hybrid AWD Mustang GT. But the Mach E is full EV (and NOT a _Mustang_!!) because Ford wanted to show they could do it.

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**Author:** ![Purebred](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/purebred/32/46796_2.png) [@Purebred](https://community.cartalk.com/u/Purebred)\
**Post date:** [February 19, 2024, 12:25pm UTC](https://community.cartalk.com/t/hybrid-question-how-does-an-electric-car-motor-assist-the-gasoline-motor/194396/9 "2024-02-19T12:25:37Z")

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> [@Mustangman](#):
>
> Would have been a MAJOR packaging nightmare (and likely impossible

That was my thought, just no room in the front end of a real Mustang. The E-Ray is around $115,000. Another car to add to my “if I win the Powerball” list.

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**Author:** ![George\_San\_Jose1](https://avatars.discourse-cdn.com/v4/letter/g/e5b9ba/32.png) [@George\_San\_Jose1](https://community.cartalk.com/u/George_San_Jose1)\
**Post date:** [February 20, 2024, 8:29pm UTC](https://community.cartalk.com/t/hybrid-question-how-does-an-electric-car-motor-assist-the-gasoline-motor/194396/10 "2024-02-20T20:29:47Z")

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It appears my question was too general to really answer. How it works varies a lot design to design.

Maybe I should ask this more basic question: When the electric motor is helping the gasoline motor power the car down the road, what is the physical connection between the electric motor and the crankshaft?

- Chain, Gears & clutch system between the electric motor shaft and the crankshaft, running in an oil bath? Like a timing chain?
- An external rubber belt with pulley’s, tensioners, and clutches? Like a timing belt, only between the crankshaft and the electric motor shaft?

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**Author:** ![texases](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/texases/32/862_2.png) [@texases](https://community.cartalk.com/u/texases)\
**Post date:** [February 20, 2024, 8:51pm UTC](https://community.cartalk.com/t/hybrid-question-how-does-an-electric-car-motor-assist-the-gasoline-motor/194396/11 "2024-02-20T20:51:43Z")

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Did you read the article on the hybrid synergy drive?

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<div class="post-metadata">

**Author:** ![George\_San\_Jose1](https://avatars.discourse-cdn.com/v4/letter/g/e5b9ba/32.png) [@George\_San\_Jose1](https://community.cartalk.com/u/George_San_Jose1)\
**Post date:** [February 20, 2024, 8:53pm UTC](https://community.cartalk.com/t/hybrid-question-how-does-an-electric-car-motor-assist-the-gasoline-motor/194396/12 "2024-02-20T20:53:53Z")

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Not yet. Will read it later.

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<div class="post-metadata">

**Author:** ![texases](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/texases/32/862_2.png) [@texases](https://community.cartalk.com/u/texases)\
**Post date:** [February 20, 2024, 9:45pm UTC](https://community.cartalk.com/t/hybrid-question-how-does-an-electric-car-motor-assist-the-gasoline-motor/194396/13 "2024-02-20T21:45:20Z")

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Watch several of these:  
[hybrid engine design - Search Videos (bing.com)](https://www.bing.com/videos/search?q=hybrid+engine+design&FORM=HDRSC6)
