Analyze Jaguar F-TYPE model technology just to run

Jaguar F-TYPE is a two-seater sports convertible sports car with front-engine rear-wheel drive. It will launch three models of F-TYPE, F-TYPE S and F-TYPE V8 S. Among them, F-TYPE and F- The TYPE S is equipped with Jaguar's new 3.0-liter V6 supercharged gasoline engine. The maximum horsepower is 340 horsepower and 380 horsepower through different adjustments. The F-TYPE V8 S is equipped with a 5.0-liter V8 with 495 horsepower. Pressure gasoline engine. In the previous article, we have already analyzed the power system of this car. Now there are some technical details that have been announced along with its debut at the Paris Motor Show.

● <br> <br> lightweight body design features: aluminum body structure completely riveting and adhesive bonding process.

It seems more meaningful to make a car lighter than it is to make it faster, but for a performance sports car, the weight and speed are complementary and they can be further optimized while ensuring the structural integrity of the car body. Its own weight, this will have a positive effect on the acceleration and handling performance of the vehicle. Jaguar engineers know this well. Before the F-TYPE models were introduced, their luxury cars had already used the technology of an all-aluminum body structure. Based on this, the F-TYPE was further optimized.

-- The optimization of the aluminum body and process will control the weight of the Jaguar F-TYPE vehicle to 1597 kg.

The body structure of the F-TYPE is completely riveted and glued. The specially smelted AC300 high-strength aluminum alloy used in this process achieves a higher impact resistance while maintaining excellent quality control. As such, the white body of the F-TYPE weighs only 261 kg (the white body weight of the Audi A5 COUPE model is 283 kg).

It is worth mentioning that compared with other Jaguar models, F-TYPE uses more synthetic materials to make the weight lighter. For example, the door sill part is made of high-strength plastic and the optimized engine compartment cover The seats were reduced by 12 kg and 24 kg, respectively. In addition, in terms of the manufacturing process, the windshield, cooling system and related sensors have been reduced in weight. The supporting elements of the engine and the bumper have also been reduced by 5 kg. The optimized drive system It was reduced by 8 kg, but in terms of service quality, the F-TYPE model still reached 1597 kg. Compared to Porsche's same-class products, the F-TYPE is still inferior in this regard (2013 Porsche Boxster S 3.4 models The curb weight is 1350 kg).

- The application of special materials to match the outline of line shapes.

In order to achieve the desired design language, in addition to the body structure using alloy materials, in some coverings, Jaguar also introduced aluminum alloy wall panels, unlike the former, the use of such aluminum alloy wall panels is to ensure the sturdiness at the same time , can obtain higher plasticity, in order to show a clear and tight lines, compared to traditional technology, F-TYPE models of the surface of the engine compartment cover can outline more curvature of the line, thus creating a great Exotic front face modeling.

● Can the opening/closing of the convertible affect the front-rear weight ratio of the body?

There was a problem in my mind that didn't get an answer from beginning to end. With this opportunity to throw it out, we might as well discuss it with you.

After the convertible top/soft top converts the roof, the center of gravity of the vehicle will change. Will the control limit of the vehicle be affected? Or to look at this issue from another perspective, when manufacturers design a hardtop/softtop convertible car, is it based on the condition of opening the canopy to adjust the chassis, or is it more concerned with the handling performance when the canopy is closed? Compared to hardtop convertibles, the soft-top convertibles that are lighter in weight are bound to be less affected by the opening or opening of the canopy. Will this be a special consideration for Jaguar engineers in the design of F-TYPE? After all, the hardtop convertible looks more luxurious and, of course, this is just our guess. However, under extreme driving conditions, subtle differences can be infinitely amplified, but the Jaguar F-TYPE is Cover as much as you can.

Or, at the beginning of the adjustment, the soft-top convertible is more biased towards the maneuvering performance under the open state. Because the soft-toped roof is light, even if the roof is closed, the control of the vehicle in the limit state will not occur. There are too many impacts, and hardtop convertibles are more concerned with handling when closing the canopy, and once the canopy is received in the trunk, its original front-to-rear weight ratio will be broken and the rear wheels will therefore be able to withstand greater The pressure is so great that in the corners, the limits of the rear wheels will come earlier.

Technical characteristics ● <br> <br> supercharged engine of 3.0 l: with an aluminum engine, a supercharger and direct fuel injection system of cooperation with each other.

● Who is the partner? Matching 8-speed automatic transmission In the new power unit, Jaguar will upgrade the gearbox. The original 6-speed automatic transmission is upgraded to an 8-speed automatic transmission. The new transmission is ZF. provide. ZF's 8th-speed automatic transmission is named 8HP series. Its main development goal was to reduce fuel consumption, through a more dense gear ratio, more efficient shift actuators, torque converter control size, The optimized design of the gearbox structure and weight makes the 8-speed automatic transmission 6% lower than the 6-speed automatic gearbox when its size is comparable to a 6-speed automatic gearbox from ZF. If matched with a hybrid system, this transmission can reduce fuel consumption by up to 25%.

--Structural design: Dimensions comparable to 6-speed automatic gearbox ZF's 8-speed automatic transmission consists of four planetary gear sets and five shift clutches to form the core of a gear ratio change mechanism for use in torque converter applications. The new technology allows it to be quickly locked and reduces the power loss of the torque converter.

The oil pump of the gearbox adopts the design of parallel arrangement of the chain transmission, so that the length of the 8AT box is controlled. With the compact clutch and the design of the planetary gear set, the volume equivalent to a 6-speed automatic transmission is finally achieved.

Through the design and development of high-precision solenoid valves and control systems, ZF's eight-speed automatic transmission has a shift time within 0.4 seconds. According to the different requirements of the main engine plant, this ZF’s eight-speed front gearbox It also supports faster shifting speeds.

● gear than the main gear reducer is set <br> <br> features: the V6 engine supercharged two models have different gear ratios is set to the final drive gear.

The two models equipped with the V6 supercharged engine not only differ in the data adjustment of the engine, but also differ in the setting of the final transmission ratio. The gear ratio of the final reduction gear of the F-TYPE V6 S model is 3.31:1. The gear ratio of the final gear of the F-TYPE V6 model is 3.15:1, which means that the V6 S model will be faster in accelerating response, but at the same speed in the same gear, The V6 S has a higher engine speed.

● Jaguar F-TYPE models are equipped with a limited slip differential <br> <br> features: V6-supercharged engine models equipped with mechanical limited slip differential, and equipped with a V8 engine, the F-TYPE Electronic limited slip differential was fitted.

Both the F-TYPE S and the F-TYPE V8 S are equipped with a limited-slip differential between the rear wheels, but the difference is that the F-TYPE S is equipped with a mechanical limited-slip differential. Type, but also wait for further technical information to determine. The F-TYPE V8 S is a multi-disc clutch that is used to achieve the speed difference between the two wheels in the limit state.

The F-TYPE V8 S electronic limited slip differential works in conjunction with the vehicle stability system and the ABS anti-lock braking system. It comprehensively analyzes and calculates the information collected, and finally transmits the control command to the relevant implementation. The organization, for example, when the rear wheel of a vehicle slips, the outer wheel that breaks the grip is idling. If not restricted, not only the power will be lost, but also the degree of slippage of the vehicle will be gradually increased, eventually exceeding the control of the driver. The 495-horsepower F-TYPE V8 S seems to require a more agile limited-slip differential system. The interaction between the multi-disc clutch electronic limited-slip differential and the brake calipers on both sides of the wheel allows for two wheels. In the event of a difference in speed, the speed of the slip wheel is limited more quickly. When the brake wheel is braked, the same side clutch is disengaged, so that the power is transmitted to the inner wheel with good adhesion. This helps the driver. Better control body posture. Therefore, even if it is powered by 495 horsepower, the F-TYPE V8 S will easily establish good trust with the driver.

The V6 engine on the F-TYPE model is already the third generation in the Jaguar family. It adopts an all-aluminum structure. In order to improve the structural strength of the engine components, the manufacturing process has been optimized, for example, relying on bolted connections. The bearing caps are connected with cross-type bolts, which not only strengthens the strength but also excels in the process.

- Fuel Direct Injection System Under the action of the high pressure plunger pump, the pressure of the fuel injected from the fuel injection nozzle can reach 150 Bar. It is said that under this pressure, the diameter of the oil droplet is only the human body hair (it may be One-fifth of the diameter of the hair, in order to improve the combustion efficiency of the fuel.

- Smooth operation of the engine and variable timing valve system In order to improve the smooth running of the engine, many engineers at the beginning of the design of the cylinder have considered the need to install the balance shaft and set aside its installation location and other auxiliary components around it. The use of balance weights on the balance shaft to counteract the vibrations generated by the rotation of the crankshaft and the up and down movement of the piston has been tested and proved to be very successful. This 3.0-liter supercharged engine also took the same concept, but its balanced system structure was designed to be simpler, that is, only one counterweight is installed at the front and rear ends of the crankshaft, and the two counterweights are interleaved. The angle of opening to compensate for the vibration generated by the V-type engine during operation.

DIVCT (Dual independent variable cam timing) variable timing valve system can be controlled by the VCT actuator to make a certain time difference between the valve and the timing chain. In a sense, this time difference does not exist, and when When the camshaft adjustment mechanism has the ability to rotate 150 degrees per second, in the narrow space, the relative time of the two becomes slower, and the intake and exhaust side valves take this opportunity to complete the adjustment of the phase angle, so that it can be guaranteed. The engine has an efficient breathing rhythm at both low and high loads.

● The supercharger is different from the conventional "Jaguar's 3.0-liter supercharged engine that uses the Roots type supercharger like the Audi 3.0TFSI."

Installed on a 3.0-liter V6 engine is the latest generation of the Roots-type twin-worm supercharger, which is more compact and more compact. In terms of temperature control, the engine's coolant can help it dissipate heat as quickly as possible. To achieve the purpose of optimizing performance. In terms of software control, Bosch's latest engine management system can help increase its efficiency by about 20%.