Honda unveils new Civic Tourer with 1.6L i-DTEC diesel
12 August 2013
|New Civic Tourer. Click to enlarge.|
Honda unveiled the new UK-built Civic Tourer wagon ahead of its official debut at the Frankfurt Motor Show next month. The Civic Tourer will be available with the choice of two engines: the new 1.6 i-DTEC diesel engine from the Earth Dreams Technology series (earlier post) and the 1.8 i-VTEC gasoline engine with manual or automatic transmission. Applied in the Honda Civic (available since January 2013), the i-DTEC engine delivers combined cycle fuel economy of 65.3 mpgUS (3.6 l/100 km).
The new Civic Tourer will be launched in Europe in early 2014. It will be built at Honda’s UK manufacturing facility in Swindon alongside the hatchback variant and the CR-V and Jazz.
The 1.6 i-DTEC diesel engine was first applied to the Civic hatchback and subsequently to the new CR-V. The engine is the first of Honda’s Earth Dreams Technology series to be introduced in Europe. The philosophy behind Earth Dreams Technology is to deliver a balance between fuel economy and driving performance.
|Honda’s 1.6L i-DTEC engine. Click to enlarge.|
The 1.6 i-DTEC engine (earlier post) features an aluminium cylinder head joined to an open deck aluminium block and is the lightest diesel engine in its class, weighing 47 kg (104 lbs) less than Honda’s 2.2-liter i-DTEC engine. All the individual components have been redesigned to minimize their weight and size and advanced production techniques have helped reduce weight even further.
The thickness of the cylinder walls has been reduced to 8 mm, compared with 9 mm for the 2.2-liter i-DTEC—a notable achievement for a diesel engine. In addition, lighter pistons and connection rods have been utilized in the 1.6-liter i-DTEC.
The key target for Honda’s development engineers was to reduce the mechanical friction of the 1.6-liter i-DTEC engine to the level equivalent of a gasoline engine. All the rotating parts were optimized to reduce their friction; for example, a shorter and thinner piston skirt was used. At 1500 rpm, the 1.6-liter i-DTEC has around 40% less mechanical friction than the 2.2-liter i-DTEC.
The 4th generation Garrett turbocharger used on the 1.6-liter i-DTEC engine features an efficient variable-nozzle design and its rotational speed is precisely controlled by the car’s electronics, minimizing turbo lag and providing an optimal combination of low- to mid-range pull and high-speed performance. The turbo has a maximum boost pressure of 1.5 bar.
The engine uses a Bosch solenoid injection system which is capable of operating at a high pressure of 1800 bar. Honda’s engineers also worked to improve the volumetric efficiency of the cylinders, employing a high intake flow and a high-swirl head port that precisely controls the combustion process to reduce hot spots that create unwanted emissions. The engine air flow is managed by using an EGR (exhaust gas recirculation) system that operates at high and low pressure to reduce NOx emissions.
Applied in the CR-V (announced this year at the Geneva show), the engine features a Lean NOx Catalyst (LNC) to help reduce NOx emissions. The overall weight difference between the CR-V and the Civic means that the CR-V has greater rolling road resistance which leads to increased NOx emissions.
The 1.6 i-DTEC engine was designed specifically for the European market and is built at Honda’s UK Manufacturing plant.
The introduction of a brand new Adaptive Damper System (ADS) will help to enhance stability and comfort under varying load and driving conditions. (Earlier post.) This is the first time that a rear adaptive damper system has been introduced on a production car and it features three settings—comfort, normal and dynamic—all of which have been developed to enhance stability and comfort under varying load and driving conditions. This allows the Civic Tourer to remain comfortable during motorway cruising, yet firm and agile when high-performance handling is required.
The new Civic Tourer features Honda’s Magic Seat system and offers a class-leading trunk space of 624 liters (22 ft3) with the rear seats in place, up to the window line. This expands to 1,668 liters (59 ft3) with the rear seats down and up to the roof.
The Civic Tourer uses the same center fuel tank layout used in the Civic hatchback—the fuel tank is located under the front seats allowing the Civic Tourer to offer more interior space and Honda’s Magic Seats.
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