Subaru BRZ

March 7, 2012
 

Subaru BRZ Drivetrain & Powertrain Pictures & Information (Scion FR-S/Toyota 86)

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Written by: Oliver Trako
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Subaru BRZ Drivetrain & Powertrain Pictures & Information (Scion FR S/Toyota 86)

Subaru BRZ Drivetrain & Powertrain Pictures & Information (Scion FR S/Toyota 86)

(FHI), FR sport “” a small co-developed with Motor Corporation. Was also announced that the configuration is 3 and grade, “S” “R” “RA” to determine the release date on March 28.

The exterior and interior are introduced in the news and “see in the picture” already here, we want to introduce a mechanism for a little more deep.

Engine
BRZ’s “low center of gravity” has it become a basic concept of BRZ. Its benefits along with the two points it is possible to reduce the role, that draw the full power of the tire. In other words, with or without hard suspension settings than necessary, or to install a high-grip tires, a translation can pursue handling performance.

However, it’s easy only if written as “low center of gravity” just, quite difficult when it comes to the actual form. If the BRZ, FA20 engine of adoption “D-4S and the next generation, horizontally opposed” is that its core. As you know, the main stream of the company have just handed over to the third generation from FB20 and if Subaru EJ20 fan. Say it has been positioned has been newly developed and FA20-only (so far) there is a dare, and the car is BRZ & with the more important role.

FA20 is a big point of, and specially designed intake manifold (hereinafter, intake manifold) and exhaust manifold (hereinafter, the exhaust manifold), but the adoption of thin oil pan it. This will clarify the features of the high center of gravity horizontally-opposed engine is lower than the engine originally series. And has achieved a very low center of gravity height and 460mm, the minimum ground clearance of 130mm. Also to the rear center position of the engine at the same time. Is also offset to the rear 240mm compared to the new Impreza, on the axle of the front wheel was almost. Weight distribution when you are around the front seat and ride 2 53:47 This, you can enjoy the fun of unique and FR.

Subaru BRZ Drivetrain & Powertrain Pictures & Information (Scion FR S/Toyota 86)
Subaru BRZ Drivetrain & Powertrain Pictures & Information (Scion FR S/Toyota 86)
Is to minimize the height offset to the rear with the engine, the main part fits in the front tire nearly

Subaru BRZ Drivetrain & Powertrain Pictures & Information (Scion FR S/Toyota 86)
Subaru BRZ Drivetrain & Powertrain Pictures & Information (Scion FR S/Toyota 86)
From the side. And layout of the main things you should weight, low center of gravity you can imagine the appearance and look Compared

Subaru BRZ Drivetrain & Powertrain Pictures & Information (Scion FR S/Toyota 86)
FA20 characters are engraved at the bottom rear of the alternator

Subaru BRZ Drivetrain & Powertrain Pictures & Information (Scion FR S/Toyota 86)
Front engine. Although this exhibition in the model does not have the exhaust manifold, it can be seen that the oil pan is a place that is a thinner low number

Subaru BRZ Drivetrain & Powertrain Pictures & Information (Scion FR S/Toyota 86)
To the front cross member of the recess for releasing the exhaust manifold is attached

Subaru BRZ Drivetrain & Powertrain Pictures & Information (Scion FR S/Toyota 86)
FA20 single engine

Subaru BRZ Drivetrain & Powertrain Pictures & Information (Scion FR S/Toyota 86)
Employs a set of 4-2-1 exhaust manifold layout type. To optimize the shape with a larger diameter pipe, it compresses the dimensions from 19mm up and down Impreza

Subaru BRZ Drivetrain & Powertrain Pictures & Information (Scion FR S/Toyota 86)
Mission side. Injector port and direct injection injector per intake manifold is in the liver of “D-4S” can be seen

Subaru BRZ Drivetrain & Powertrain Pictures & Information (Scion FR S/Toyota 86)
This position of the intake air throttle valve for the front? large port may become regular menu?

Subaru BRZ Drivetrain & Powertrain Pictures & Information (Scion FR S/Toyota 86)
In contrast to the long stroke and stroke 84.0mm × 90.0mm bore is FB20, FA20 are both 86mm square. Engine and has been oriented towards the higher rotation.

? Transmission
6-speed transmission are two types of AT and MT 6-speed. MT is a single cone synchro over triple-cone, a 4-speed to 6, in the range shift feeling daily rate has been increased from 1 to 3. AT is electronically controlled adaptive control was adopted. Adaptive control and determine what the road conditions and vehicle state from the accelerator opening, that control is performed in accordance with the intent of the driver. 3 provides a mode of “SPORT” “SNOW” “(manual) M”, has become a mechanism, such as running can enjoy according to the situation by changing the degree of control interventions, respectively.

It has become a royal road to select the MT given the run, there is only one problem. It should be turned to what was assumed 205Nm (20.9kgm) / 6400 ~ 6600rpm which is the current engine torque capacity of the transmission. Would have been taken from the factor of safety to some extent, it would not matter if a little about, such as response to the large torque 422Nm (43.0kgm) / 4400rpm Impreza is it has not been assumed, for example. But that the drive train, otherwise the propeller shaft and drive shaft and differential, and there is enough space in the AT it.

However, there is no problem at all levels, even if it is about fine-tuned 6-speed MT. So there is a commensurate need to put hand to the engine if you plan to give more power and torque, there is a story about “Me and the brothers are also enhanced transmission if you do up there.” Paradoxically, it will also with a supercharger (MT vehicles) does not publish unless you solve this problem.

Subaru BRZ Drivetrain & Powertrain Pictures & Information (Scion FR S/Toyota 86)
Transmission tuning only is subjected to both MT, AT

Subaru BRZ Drivetrain & Powertrain Pictures & Information (Scion FR S/Toyota 86)

Adopt a triple cone synchro on first gear to 3. Over a short stroke is attained at the same time, shift change can be pleasant
Subaru BRZ Drivetrain & Powertrain Pictures & Information (Scion FR S/Toyota 86)
Subaru BRZ Drivetrain & Powertrain Pictures & Information (Scion FR S/Toyota 86)

AT 6-speed electronic control to adopt the adaptive control. Settings can be selected depending on the run by the switch of the backward shift. Downshift blipping control is also carried

? Suspension
Suspension is the same combination, such as Impreza front / MacPherson strut, rear and / Double wishbone. However, the details are quite different.

Strut front cross member and lower arm employs a new shape. Reverses the orientation of the front and rear lower arm, and become the front side mount position, significant changes have been made. In addition, the attention also to the coil spring. If the front, because the bottom is above the tire mount, spring rate patterns earn you reduce the number of generally larger diameter wound. But, placed inside the tire diameter in bottom mount suppressing the BRZ. He has achieved a sporty style reduces the height of the front hood.

Newly designed rear sub-frame. As well as to optimize the suspension geometry, which enables deployment of large-capacity def.

Subaru BRZ Drivetrain & Powertrain Pictures & Information (Scion FR S/Toyota 86)

Positive difference to the pivot lower arms of the L-shaped side of the vehicle and Impreza. This is to lay closer to the center of the vehicle with a lower engine mounting position
Subaru BRZ Drivetrain & Powertrain Pictures & Information (Scion FR S/Toyota 86)

Stabilizer is lighter by strut section from the mounting position of the arm portion

Subaru BRZ Drivetrain & Powertrain Pictures & Information (Scion FR S/Toyota 86)

Cut to the inside of the tire-mounted position at the bottom of the spring. Also can be pulled by this upper position, based on the high-quality low bonnet

Subaru BRZ Drivetrain & Powertrain Pictures & Information (Scion FR S/Toyota 86)

Double-wishbone rear suspension

Subaru BRZ Drivetrain & Powertrain Pictures & Information (Scion FR S/Toyota 86)

In the Impreza is the upper arm was cast, and press molding was

Subaru BRZ Drivetrain & Powertrain Pictures & Information (Scion FR S/Toyota 86)

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