The New Jaguar F-type Four-Cylinder: A Pure Sports Car with Even Greater Efficiency

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The New Jaguar F-type Four-Cylinder: A Pure Sports Car with Even Greater Efficiency

Jaguar has put high-tech efforts in the F-TYPE by introducing the state-of-the-art four-cylinder Ingenium petrol engine. The award winning F-TYPE family is even bigger as it now comprises of models from the entry-level four-cylinder to Jaguar’s 200mph all-weather supercar that is the F-TYPE SVR.

The excitement is even better as the Jaguar’s all-aluminium two-seat sports car now is accompanied by the advanced 300PS 2.0-litre turbocharged power plant gives an enhanced agility and optimised efficiency and affordability.

The new model can accelerate from 0-100 km/h in only 5.7 seconds and get a top speed of 250 km/h. The turbocharged engine makes up for an exceptional response throughout the rev range as it has a maximum torque of 400 Nm, produced with just 1,500rpm, combined with the eight-speed Quickshift transmission.

The 296 HP Ingenium engine is innovative as it provides maximum power in a four-cylinder unit ever offered by a production Jaguar. It also generates the best specific power output of any engine in the F-TYPE range: 148 HP per litre. Also, this is a very efficient engine in the F-TYPE in the range, with a 16 per cent betterment in fuel economy over the 335 HP V6.

An integration with a bunch of advanced technologies make the Ingenium engine enhanced and well-equipped to deliver this blend of high performance and low fuel consumption. Neatly coordinated with the cylinder head is a futuristic electrohydraulic valvetrain featuring patented control algorithms developed in-house. This technology provides a fully variable control of intake valve lift for optimum power, torque, and efficiency throughout the engine’s operating range.

The exhaust manifold is integrated into the cylinder head casting. Coolant flowing through ducts in the manifold reduces warm-up times and therefore reduces fuel consumption and emissions. The manifold is delicately complemented with the twin-scroll turbocharger. The design prevents exhaust gas pumping interference, along with making sure that the turbine wheel responds far more quickly: boost pressure is delivered near-instantaneously, making turbo lag almost non-existent, providing the responsiveness so familiar to the F-TYPE driving experience.

 

 

To ensure an outstanding launch performance and temporary response along with making the engine capable to develop its high peak power output, the turbocharger features ceramic ball bearings. These give away the lowest possible bearing friction, especially due to cold starts.

The 200 bar direct injection system has centrally-mounted fuel injectors. Along with optimised spray patterns the technology also helps in minimising fuel breach on the cylinder walls and the piston crowns, revamping efficiency and lessen emissions.

 

The Ingenium engine contributes to an overall vehicle weight reduction of 52kg – most of which is over the front axle – and this is key to the four-cylinder F-TYPE’s enhanced agility. Careful tuning of the chassis to accompany the new engine brings even greater steering response, body control and ride comfort.

There have been no miss outs on the audio feedback as it is an essential part of the F-TYPE’s appeal, henceforth hasn’t been compromised upon. A meticulously-tuned active exhaust is standard on entry-level F-TYPE models, while the R-Dynamic variants feature a divertable active exhaust for a more involving driving experience.

The 2018 Jaguar F-TYPE gets a visual enhancements to provide the sports car an even more powerful presence. Redesigned bumpers, together with full LED headlights enhance the F-TYPE’s award-winning design and provide greater differentiation between each model in the range.

The new F-TYPE range also offers a huge assortment of advanced driver assistance systems underpinned by the integration of a highly sophisticated forward-facing stereo camera. These systems help to improve safety and reduce driver workload and include Autonomous Emergency Braking, Lane Departure Warning and Lane Keep Assist, Traffic Sign Recognition, Adaptive Speed Limiter and Driver Condition Monitor.

 

 

POWERTRAIN

The new 2.0-litre 296 HP Ingenium petrol engine is the most powerful four-cylinder engine produced by the company. Featuring a suite of modern technologies delivering exceptional performance along with refinement and efficiency.

The all-aluminium Ingenium petrol engine suits the for the all-aluminium F-TYPE entirely and expands the powertrain line-up from 296 HP four-cylinder up to 567 HP V8 – a breadth of performance unrivaled in the sports car segment.

Alike the supercharged six- and eight-cylinder engines, the turbocharged four-cylinder delivers the driving experience promised by the F-TYPE’s award-winning design, but with new levels of efficiency. Generating 150PS per litre, it has the highest specific power output of any engine in the new F-TYPE range.

Comes with a rear-wheel drive and a specifically-optimised eight-speed Quickshift transmission, the four-cylinder enables fuel consumption and CO2 emissions on the European combined cycle of 39.2mpg (7.2-litres/100km) and 163g/km respectively.

Closely integrated into the cylinder head is a electrohydraulic valvetrain featuring patented control algorithms developed in-house. The technology enables an entirely variable control of intake valve lift for optimum efficiency, power, and torque all around the engine’s operating range.

 

 

Ingenium petrol engines use a different approach than usual petrol engines: load control is managed primarily by the intake valves themselves by varying the amount of lift, and the duration for which they are open. This is achieved by stopping the direct operation of the valves by the intake cams: instead, they actuate compact hydraulic pumps via low-friction roller finger followers. The oil pressure generated by these pumps is then used to open and close the intake valves.

 

 

 

Performance, response and efficiency: advanced turbocharger technology

For the first time in a Jaguar, the exhaust manifold is unsegregated into the cylinder head casting. Coolant flowing through ducts in the manifold lessens warm-up times and therefore reduces fuel consumption and emissions.

The unsegregated exhaust manifold can also minimise maximum exhaust gas temperatures and therefore the need for enrichment at high load, delivering further efficiency improvements – not only on the official test cycle but also in real-world driving.

 

 

The manifold is carefully matched to a twin-scroll turbocharger. The duct inside the water-cooled turbine housing is divided in two for maximum efficiency, while one gets power from exhaust gas from cylinders one and three, the rest by cylinders two and four.

This arrangement prevents exhaust gas pulsation interference, ensuring that the turbine wheel responds far more quickly: boost pressure is delivered near-instantaneously, making turbo lag almost non-existent, providing the responsiveness so familiar to the F-TYPE driving experience.

The turbocharger features ceramic ball bearings to ensure the best possible launch performance and short response while still enabling the engine to create its high peak power output, this is again for the first time in a Jaguar Land Rover petrol engine. These deliver the lowest possible bearing friction, especially from cold starts.

Cleaner combustion: inherently low emissions

The Ingenium engine also provides for a new 200 bar direct injection system, which means the injectors are centrally-mounted. The benefit of this is that together with optimised spray patterns, this configuration helps to minimise fuel breach on the cylinder walls and the piston crown, improving efficiency and reducing emissions.

The inlet ports give high levels of charge motion which, with the enhancements made to the direct injection system, reduce wall wetting and promotes greater mixing of the fuel and air for more efficient combustion.

Efficient by design

All Ingenium engines deliver benchmark low levels of friction, contributing to inherently good efficiency and refinement.

The map-controlled oil pump matches flow rate according to engine speed, load, and temperature, and the switchable piston cooling jets only spray oil onto the underside of the piston crowns when required, further reducing a load on the lubrication system.

The split cooling system with map-controlled electric coolant pump ensures rapid engine warm-up by only circulating coolant through the block once the engine comes up to temperature. Apart from reducing fuel consumption it also improves passenger comfort because the heater is capable of warming the F-TYPE’s cabin more quickly.

 

 

CHASSIS

The F-TYPE has the dynamics DNA of the V6 and V8 models but the welcome of the Ingenium engine together with a bespoke chassis tune make it the lightest and most agile yet

From day one the F-TYPE was made to provide outstanding agility and response without compromising the day-to-day usability and ride comfort expected from all Jaguar cars.

The stiff, light aluminium body structure and all-around aluminium double wishbone suspension have always been fundamental to delivering that duality of character. Now, the development team has meticulously tuned the chassis to take full advantage of the additional weight savings offered by the new four-cylinder engine.

The weight-shedding majority of this mass reduction is located over the front axle, delivering maximum benefit to vehicle dynamics, and improved weight distribution – the balance moves one percentage point to the rear.

The front and rear spring rates have been reduced by four and three per cent respectively to suit the reduction in corner weights. The valving of the monotube dampers incorporates learning from the

F-TYPE SVR programme: meticulous tuning delivers enhanced ride comfort while maintaining the required handling character.

The F-TYPE’s electric power-assisted steering system – already a benchmark for feel and response – has a unique calibration for the four-cylinder model to extract the full benefit of the weight savings and delivers improved tactility and feedback. Together with the Torque Vectoring system – which can apply precisely-controlled braking of the inner wheels during cornering to mitigate understeer – the changes make the F-TYPE even more engaging and enjoyable to drive.

The initial level four-cylinder models have as standard a new, lightweight 18-inch wheels fitted with 245/45/R18 tyres at the front axle and 275/40/R18 tyres at the rear: this help to reduce unsprung mass, further improving responsiveness and control.

The R-Dynamic models have 19-inch wheels as standard with 245/40/R19 and 275/35/R19 tyres front and rear respectively. All the four-cylinder F-TYPE models can be identified with a range of optional 19- and 20-inch wheel designs.

 

Technology

The new F-TYPE features a forward-facing stereo camera: this vision sensor is at the heart of its new advanced driver assistance systems. One of the most important is the Autonomous Emergency Braking system: if the system’s controller determines that a collision with the vehicle ahead is imminent, full braking is initiated automatically, helping to avoid the collision or to mitigate its effects.

The stereo camera also provides the intelligence for the Lane Departure Warning (LDW) and Lane Keep Assist (LKA) systems. By monitoring the vehicle’s position relative to lane markings either side, LDW can help to prevent drivers from inadvertently leaving their lane by triggering a visual warning in the instrument cluster and a haptic warning through the steering wheel rim.

 

The Traffic Sign Recognition (TSR) system employs the stereo camera to keep the driver aware of the speed limit – including temporary limits which apply to road works, and also the variable limits used on some motorways. The limit is displayed in the instrument cluster, and camera data is always cross-referenced against GPS data for maximum robustness.

The Adaptive Speed Limiter (ASL) also further supports the driver. This intelligent system uses TSR system data to adjust the set point and can automatically increase or decrease the vehicle's maximum speed while the accelerator pedal is pressed. If the TSR system recognises a higher speed limit ahead, ASL lets the driver be aware of it and also smoothly accelerates the vehicle up to the new limit. If the speed limit is lower, the vehicle can coast down accordingly.

 

 

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