Electric as opposed to vacuum boosted brakes?

[JTK]

My new to me 2022 Nissan Frontier has this. Best I can tell, it serves as ABS function as well. I'm assuming this is a trend as things go electric or maybe it's for greater computer control.

I recall Buick Grand Nationals having some type of non-vacuum, hydro-boosted brakes back in the 1980s..

Any other BITOGers own a non-turbo, run-o-the-mill vehicles with this as well?

2022 Nissan Frontier Power Brake Booster - 47210-EZ00B - Genuine Nissan Part

Power Brake Booster. 2022 Nissan Frontier. Genuine Nissan Part - 47210-EZ00B (47210-EZ00A, 47210EZ00B)

parts.nissanusa.com

 

[eljefino]

All my prii

 

[brianl703]

Some hybrids like the Volt have an electric vacuum pump for the brake booster. At least that's what I think I hear running when I push the brakes a few times with the engine off.

 

[jhellwig]

Makes sense. If you can make or incorporate existing systems into it that makes less stuff to mess up.

GM used a charge pump in their AWD Stabilitrac systems to make that function. I think later they had the ABS system incorporate this instead of a separate pump. The Tahoe I had with AWD that also used a hydro boost brake booster with all this other stuff.

 

[390pcode]

My 2000 Chevy Suburban 2500 has hydroboost.

 

[MrHorspwer]

GM's latest system is called eBoost. It is a "brake-by-wire" system that has the master cylinder, booster (electric, not vacuum), ABS hydraulic unit, and ABS ECU all integrated into a single unit. Under normal operation, stepping on the brake pedal does not directly generate fluid pressure. The brake pedal position is read as an input and the system responds by generating and distributing fluid pressure as necessary and providing appropriate feedback through the brake pedal.

As models are refreshed, it's becoming pretty ubiquitous across their lineup but it was introduced on the Corvette and full-size trucks in 2019 and full-size SUVs in 2020.

 

[92saturnsl2]

My new to me 2022 Nissan Frontier has this. Best I can tell, it serves as ABS function as well. I'm assuming this is a trend as things go electric or maybe it's for greater computer control.

I recall Buick Grand Nationals having some type of non-vacuum, hydro-boosted brakes back in the 1980s..

Any other BITOGers own a non-turbo, run-o-the-mill vehicles with this as well?

2022 Nissan Frontier Power Brake Booster - 47210-EZ00B - Genuine Nissan Part

Power Brake Booster. 2022 Nissan Frontier. Genuine Nissan Part - 47210-EZ00B (47210-EZ00A, 47210EZ00B)

parts.nissanusa.com

Not a new concept though I'm sure the design has evolved.

D#6 90-94 Jaguar XJ6 XJ12 ABS Brake Pump Booster Accumulator 10.0511-9023.1 | eBay

Find many great new & used options and get the best deals for D#6 90-94 Jaguar XJ6 XJ12 ABS Brake Pump Booster Accumulator 10.0511-9023.1 at the best online prices at eBay! Free shipping for many products!

www.ebay.com

 

[redhat]

Very common on 2000s GM 1/2 ton Tahoe Suburban and about all of the 3/4 trucks/SUVs. Hydroboost.

Power steering system feeds the hydro-boost assisted master cylinder. I have always liked how hydro-boost brakes felt. I am assuming the weight of these trucks they need the help? Or does an LS not have enough vacuum at idle? I do not know.

 

[92saturnsl2]

Very common on 2000s GM 1/2 ton Tahoe Suburban and about all of the 3/4 trucks/SUVs. Hydroboost.

Power steering system feeds the hydro-boost assisted master cylinder. I have always liked how hydro-boost brakes felt. I am assuming the weight of these trucks they need the help? Or does an LS not have enough vacuum at idle? I do not know.

Hydroboost goes way back, it's a heavy duty thing-- not exclusive to LS engines.

 

[JTK]

If I understand it correctly on this Chrysler of Japan system (Nissan), brake fluid is the medium used for the boost /assist?

My pics aren't good, but that cylinder off to the side cautions that it has nitrogen gas under pressure. I'm assuming it's like a shock absorber or dampener of some sort.

Either which way, the brakes are excellent on the truck. If it's very quiet in the cab, you can detect a whirring noise from this brake system when in use.

 

[92saturnsl2]

Sounds just like the old Teves system used in the late 80's to early 90's. (same as what i linked to on Ebay).

 

[Marcozi]

"Brake by wire"!!!! Gott im Himmel!

 

[KrisZ]

If I understand it correctly on this Chrysler of Japan system (Nissan), brake fluid is the medium used for the boost /assist?

My pics aren't good, but that cylinder off to the side cautions that it has nitrogen gas under pressure. I'm assuming it's like a shock absorber or dampener of some sort.

Either which way, the brakes are excellent on the truck. If it's very quiet in the cab, you can detect a whirring noise from this brake system when in use.

I presume the primary assist is done by the variable electric pump that pressurized the system based on brake pedal position. The cylinder under pressure is probably for panic stops to provide instant assistance and compensate for pump delay.

I know BMW motorcycles use servo assisted brakes, but don’t have a pressure tank, most likely due to very small fluid displacement in the system, when compared to an automotive one.

 

[Jetronic]

My new to me 2022 Nissan Frontier has this. Best I can tell, it serves as ABS function as well. I'm assuming this is a trend as things go electric or maybe it's for greater computer control.

I recall Buick Grand Nationals having some type of non-vacuum, hydro-boosted brakes back in the 1980s..

Any other BITOGers own a non-turbo, run-o-the-mill vehicles with this as well?

2022 Nissan Frontier Power Brake Booster - 47210-EZ00B - Genuine Nissan Part

Power Brake Booster. 2022 Nissan Frontier. Genuine Nissan Part - 47210-EZ00B (47210-EZ00A, 47210EZ00B)

parts.nissanusa.com

Mitsubishi Pajero had a system like this for ages

 

[JTK]

Mitsubishi Pajero had a system like this for ages

Are those mainly diesels? I could see something like this being ideal for a vacuum less diesel.

 

[Jetronic]

Sounds just like the old Teves system used in the late 80's to early 90's. (same as what i linked to on Ebay).

yes, works like that in the mitsubishi

 

[Jetronic]

Are those mainly diesels? I could see something like this being ideal for a vacuum less diesel.

they can be diesel or gas, but nobody bought gas when I worked on them. They had vacuum anyway.

 

[Asterix]

Electric brake boosters are here today partly because a computer needs to be able to apply the brakes. Bosch makes one called the iBoost. Also, to avoid the need for a vacuum pump in an electric car.