22 July 2010 at 11:17

New 74.2MPG Ford Focus ECOnetic Uses Auto-Stop-Start To Achieve 99g/km C02

The new 2010 Ford Focus ECOnetic takes a successful formula to the next level by combining new technology with clever details delivering the most fuel-efficient Focus to date.  

Dedicated Ford Fiesta, Focus, Mondeo and Transit ECOnetic models have already established themselves as smart choices for customers prioritising low carbon motoring and high levels of fuel efficiency. Now, the next generation Focus ECOnetic changes the rules again, and introduces Ford of Europe's first production application of the Ford Auto-Start-Stop system.

Efficient Technology

The new Focus ECOnetic five-door, revealed at the 2009 IAA Frankfurt Motor Show in September, is available with a new optional Ford Auto-Start-Stop system that was previewed on the Ford iosis MAX Concept at the 2009 Geneva Motor Show.

Regardless of whether Auto-Start-Stop is specified, the Focus ECOnetic has Smart Regenerative Chargingand Low Tension FEAD (Front End Accessory Drive) - technologies that are new to the Ford of Europe product line-up, and which combine to deliver lower emissions and better fuel efficiency and pave the way for future powertrains from the blue oval.

Power comes from Ford's 109 PS (80 kW) 1.6-litre Duratorq TDCi engine with standard coated Diesel Particulate Filter (cDPF). Target average CO2 emissions for the Auto-Start-Stop equipped model are as low as 99g/km, with a combined fuel economy of 74.2mpg and 104g/km for the standard Focus ECOnetic.* 

The new Focus ECOnetic is also the first vehicle to feature the new Ford Eco Mode system as standard. An all-new driver information system, Ford Eco Mode, helps to educate the driver to achieve improved real-world fuel economy.

"To achieve these impressive figures, we combined the proven approach of the original Focus ECOnetic with even more detail improvements and all-new technologies," said Dr. Thilo Seibert, Manager CO2 Technologies for Ford of Europe.  "The new Focus ECOnetic is particularly significant as it paves the way for some of these technologies to be implemented into our core vehicle series in the near future."

Auto-Stop-Start System

 The new Focus ECOnetic five-door is the first European Ford to offer a new Auto-Start-Stop system, which combines automatic engine start-stop operation with smart regenerative charging and advanced battery management systems.

This system automatically shuts down the engine when the vehicle is at idle – at a traffic light, for example – and restarts the engine when the driver wants to move off, saving the fuel wasted at idle.

The system can reduce fuel consumption and CO2 emissions by up to five per cent in mixed driving conditions. In an urban environment and in heavy traffic with frequent stops the savings could increase to as much as 10 per cent.

The advanced Auto-Start-Stop system has been designed with driver convenience in mind, and to provide consistent starting and stopping performance that is smooth, quiet and seamless, requiring no changes in driver behaviour.

When the engine shuts down, the electronic control unit immediately prepares the engine's systems for an instant restart. An integrated system of sensors is then used to detect when the driver performs an action that signals the intent to drive off, such as pressing the accelerator or clutch pedal.

As soon as the driver prepares to move away, the engine starts quietly and almost instantly; it only takes the system around 0.3sec to fire up the engine. The process is near imperceptible, and happens before gear selection is completed.

To support the increased number of engine starts, the starter motor is upgraded with a high performance electric motor and a stronger pinion-engagement mechanism with reduced noise levels.

Advanced battery technology is required to ensure the main vehicle battery copes with the frequent charge-discharge cycles common with stop-start operation.

Smart Regenerative Charging

 The new Focus  also uses a technology to ensure that the battery is kept charged in the most efficient way.

A 'Smart Regenerative Charging system' increases the alternator output when the vehicle brakes or decelerates. This converts the kinetic energy of the vehicle into electric energy without having to use additional fuel.

The ‘free’ electric current is used to recharge the battery, so that it can be used by the electrical systems at a later stage.  This could be when the engine is switched off during a stop-phase, but can also be when the generator is operating in a less efficient mode.

The battery has an advanced management system that continually monitors its status and communicates with the Auto-Start-Stop system, so that the regenerative charging feature can charge the battery in the optimal way.  The start-stop system knows how much battery charge is available, so that it can leave the engine running if the battery does not have a sufficient level of charge, pretty handy stuff!

Improved Duratorq TDCI Engine 

For the Ford Duratorq 1.6-litre TDCi engine, new injectors were specified, while the intake system was revised and the exhaust system fitted with an oxygen sensor. The engine management system was recalibrated and a standard coated Diesel Particulate Filter (cDPF) was added. No additives are required for the filtering process.

Additionally, the gear ratios of the Ford Durashift five-speed manual gearbox have been revised, offering a longer ratio for third, fourth and fifth gears – bringing down engine revs and engine noise.

econetic focus 2010


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