Home » News » Nissan » New Nissan 1.2-litre 3-cylinder Supercharged Engine

Nissan is introducing a new 1.2-litre 3-cylinder supercharged engine named the HR12DDR which aims at being the lowest fuel consuming gasoline engine in the world.

The new 1.2-litre 3-cylinder supercharged engine has the same output as a 1.5-litre unit, while CO2 emission level is 95 grams per Km.

Some info regarding the technology behind the new Nissan 1.2-litre 3-cylinder supercharged engine says that the Miller cycle was adopted meaning the power stroke is enhanced by the compression stroke and the thermal energy of the fuel is converted into kinetic energy more efficiently than in a regular 4-stroke cycle engine.

The supercharger on this new Nissan 1.2-litre 3-cylinder engine is fitted with an on/off clutch while the hydrogen-free coating for the piston rings and the variable displacement oil pump help reduce friction by up to 30 percent.

For more details regarding the new 1.2-litre 3-cylinder supercharged Nissan engine available below the jump.

Nissan press release :

YOKOHAMA (July 16, 2010)-Nissan Motor Co., Ltd. today announced its newly developed HR12DDR, a 1.2 liter engine, aiming to achieve the lowest level of fuel consumption in the world for gasoline-powered cars, with an engine power output equivalent to that of a 1.5L engine(s) and CO2 emission of 95 grams per kilometer (New European Drive Cycle).

The engine will be mounted on the new "Micra (also known as March in other markets)" in the European market in the first half of 2011. The engine is based on the HR12DE, the 1.2L 3-cylinder engine mounted on the new Nissan MARCH. High engine performance

and low fuel consumption levels have been achieved through the adoption of the Miller cycle, gasoline direct injection system (DIG), and a highly efficient supercharger, in combination with an Idling Stop system.

Here are details of the technologies:
By adopting the Miller cycle, in which the power stroke is enhanced by the compression stroke as a result of delaying the closing timing of the intake valve, the thermal energy of the fuel is converted to kinetic energy much more efficiently than it is with regular 4-stroke cycle engines, and pumping loss caused by intake manifold negative pressure has been reduced.

Moreover, the highly compressed and high-temperature air-fuel mixture is cooled by the latent heat of the vaporization of fuel directly injected into the cylinder, and the temperature of the combustion chamber is lowered by adopting a piston-cooling channel and sodium-filled valves to control detonation. These technologies have enabled a compression ratio of 13*1 for improved combustion efficiency.

The supercharger*2 is equipped with an automatic on/off clutch, which means that both high fuel efficiency and high engine performance can be achieved by automatically switching off supercharging while driving at low speeds, such as on city roads.

Moreover, adoption of a hydrogen-free diamond-like carbon (DLC) coating for the piston rings and a variable displacement oil pump helps to reduce friction by up to 30%, compared with conventional 4-cylinder engines with similar performance levels.

These technologies are the culmination of the company's research and development efforts based on the Nissan Green Program 2010 (NGP 2010) - Nissan's mid-term environmental action plan that includes initiatives to reduce CO2 emissions and introduce truly effective technologies, products and services into the market.

   1. *1 Volume ratio of top dead center (TDC) and bottom dead center (BDC). With a higher ratio, higher efficiency (i.e. high performance) can be expected, although it becomes prone to detonation, such as engine knocking. In the case of gasoline-powered engines, the compression ratio is around 10, even for high-performance engines.
   2. *2 A system in which a pump engine powered by the output shaft forcibly sends compressed air to the cylinder to gain a similar effect to that of engine displacement.

Related Articles

Leave a Comment

Fields marked with * are required
Name *:
Email *:
Comment *:
Code *:
  CAPTCHA
  • Email
  • YouTube
  • RSS
  • Twitter
  • facebook
  • feedburner

Related Specs

  1. 1969 Nissan Fairlady Z 432

    Engine: S20 Inline-6, Power: 119.3 kw / 160 bhp @ 7000 rpm, Torque: 177 nm / 130.5 ft lbs @ 5600 rpm
  2. 1998 Nissan R390 GT1

    Engine: Twin Turbo V8, Power: 410.1 kw / 549.9 bhp @ 6800 rpm, Torque: 637.2 nm / 470.0 ft lbs @ 4400 rpm
  3. 1984 Nissan 300ZX

    Engine: V6, Power: 165.5 kw / 221.9 bhp @ 6400 rpm, Torque: 268.5 nm / 198.0 ft lbs @ 4800 rpm
  4. 1990 Nissan 300ZX Twin Turbo

    Engine: Turbocharged V6, Power: 223.7 kw / 300.0 bhp @ 6400 rpm, Torque: 383.7 nm / 283.0 ft lbs @ 3600 rpm
  5. 2002 Nissan 350Z

    Engine: Aluminum VQ35DE V6, Power: 214.0 kw / 287 bhp @ 6200 rpm, Torque: 371.49 nm / 274 ft lbs @ 4800 rpm

New Vehicles

Ferrari 458 Italia Speciale Spider Apperta introducedFerrari 458 Italia Speciale Spider Apperta introduced
Ferrari will unveil during this year Paris Motor show a special edition 458 Italia Spider Speciale, called Aperta. The car will celebrate the success ...

Concept Cars

Infiniti Q80 Inspiration Concept teased againInfiniti Q80 Inspiration Concept teased again
Infiniti continues to tease us with the Q80 Inspiration Concept, set to make a public debut next week, during Paris Motor Show. ...

Custom Cars

2014 Mercedes-Benz E63 AMG by Brabus2014 Mercedes-Benz E63 AMG by Brabus
Brabus just revealed hottest versions of the current Mercedes-Benz E63 AMG, 850 6.0 Biturbo, which develops 848bhp and 1,450Nm of torque. ...

Green Autos

Mitsubishi Outlander PHEV Concept S unveiled ahead of Paris Motor ShowMitsubishi Outlander PHEV Concept S unveiled ahead of Paris Motor Show
Mitsubishi will unveil the new Outlander PHEV Concept-S during this year Paris Motor Show. The prototype is an evolution of the current Outlander PHEV ...

Future Cars

Cadillac will become an independent brand with New York headquartersCadillac will become an independent brand with New York headquarters
General Motors announced that the Cadillac brand will continue its expansion as an independent brand and as a separate business unit. The legendary brand ...

Market News

Subaru BRZ special edition unveiled in AustraliaSubaru BRZ special edition unveiled in Australia
Subaru tries to stop decreasing sales of its current BRZ in Australia with a special that brings more equipment for less money. The new edition promises ...

Gadgets

Jaguar Land Rover self-learning systemJaguar Land Rover self-learning system
Jaguar Land Rover officially introduced the self-learning system. It sounds complicated and it is. It looks like the system developed by the British manufacturer ...

Various News

BMW i8 Concours dElegance sells for record sumBMW i8 Concours dElegance sells for record sum
BMW would like to reconsider the starting price for an i8 in the US, after a unique unit of the supercar, called Concours d`Elegance sold for a new record ...

Videos

Jeep Renegade first driving impressionsJeep Renegade first driving impressions
AutoExpress got the chance of testing the new Jeep Renegade in Italy`s Balloco test circuit. The British journalists also tested the car in off-road conditions, ...

Motorsports

Hyundai Sonata for SEMA has 708 HPHyundai Sonata for SEMA has 708 HP
Hyundai has unveiled the first teaser picture with the upcoming Sonata for SEMA. The car was developed with some help from Bisimoto Engineering and the ...