Honda Adds High Performance, Low Emission, Small Diesel Engine to the
The new 1.6-litre i-DTEC diesel engine is the first engine from
Honda's Earth Dreams Technology series to be launched in Europe. The
engine will be introduced on the Civic at the beginning of 2013.
Combining competitive power (120 PS) and class-leading torque (300 Nm
@ 2000 rpm) with CO2 emissions of just 94 g/km the new Civic 1.6-litre
i-DTEC offers impressive fuel economy and performance.
"The key focus of our Earth Dreams Technology philosophy is to
balance environmental efficiency with the dynamic performance expected
of a Honda," says Suehiro Hasshi, Large Project Leader for all
Civic models in Europe including the 1.6-litre i-DTEC. "It is
important that our cars are fun to drive."
"This is a new approach from the ground up," Tetsuya Miyake,
Project Leader for the 1.6-litre i-DTEC engine. "There were no
benchmarks for us because those targets would have been too low. We
were determined to establish a benchmark of our own that our
competitors would have to follow."
"Developing this engine has been all about smart, pure
engineering," says Suehiro Hasshi. "Our motivation has been
to make many small detail improvements that, together, make a major
difference. That is the challenge and the beauty of the Earth Dreams
The new 1.6-litre i-DTEC engine has been specifically designed for the
European market, to meet growing customer demand for low emission
diesel engines. The new engine will be uniquely built for the European
market at Honda's European manufacturing facility in Swindon, UK.
Demonstrating the importance of this new diesel engine to Honda's
sales plans in Europe, a new purpose built diesel engine production
line has been installed at Honda of the UK Manufacturing (HUM). This
new line is capable of producing up to 500 diesel engines in one day.
Operating on a two shift pattern this equates to 1 engine every 138
seconds. The new line will produce both the new 1.6-litre i-DTEC and
the existing 2.2-litre i-DTEC engines.
The 1.6-litre i-DTEC diesel engine will also be applied to the new
CR-V (also built at HUM) later in 2013, and the Earth Dreams
Technology philosophy will be applied to all of Honda's power trains
in the future.
The New Civic 1.6-litre i-DTEC: The Engine in Detail
Lightest Diesel Engine in its class
Honda's new 1.6-litre i-DTEC is comprised of an aluminium cylinder
head joined to an open deck aluminium block. It is the lightest diesel
engine in its class, weighing 47kg less than Honda's 2.2-litre i-DTEC
All the individual components have been redesigned to minimise their
weight and size and advanced production techniques have helped reduce
weight even further.
The thickness of the cylinder walls has been reduced to 8mm, compared
with 9mm for the 2.2-litre i-DTEC. This is an exceptional achievement
for a diesel engine. In addition, lighter pistons and connection rods
have been utilised in the 1.6-litre i-DTEC.
Reduced Mechanical Friction
The key target for Honda's development engineers was to reduce the
mechanical friction of the 1.6-litre i-DTEC engine to the level
equivalent of a petrol engine. "All the rotating parts have been
carefully optimised to reduce their friction," says Tetsuya
Miyake. For example, a shorter and thinner piston skirt has been used.
At 1500rpm, the 1.6-litre i-DTEC has around 40% less mechanical
friction than the 2.2-litre i-DTEC.
"This not only reduces emissions and improves fuel efficiency; it
also improves the engine's response, both on and off the throttle,
making the car more fun to drive. We have reduced the mechanical
friction of the engine to the level equivalent of an existing petrol
engine, which is an outstanding achievement."
The 4th generation Garrett turbocharger used on the 1.6-litre i-DTEC
engine features an efficient variable-nozzle design and its rotational
speed is precisely controlled by the car's electronics, minimising
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 1.5bar.
Efficient Fuel Injection System and Air Flow
Honda's 1.6 i-DTEC uses a Bosch solenoid injection system which is
capable of operating at a high pressure of 1800bar. A high fuel
pressure means that the fuel is injected at a faster rate and the
finer the atomization of the fuel spray. This improves the fuel mixing
with the air resulting in a cleaner and more efficient combustion
helping to achieve the low emissions and fuel consumption.
Honda's engineers have also worked to improve the volumetric
efficiency of the cylinders, employing a high intake flow and a high
swirl head port precisely controlling 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.
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