Nissan Almera Connects New HR10DET Engine to X-TRONIC

The All-New Nissan Almera engine is designed with inspiring performance thus uplifting the sedan to a high level. And by adopting the Mirror Bore Coating Technology utilized in Nissan GT-R‘s turbo engine, friction is reduced- again boosting the engine’s performance.

For the 1.0-litre engine to transmit all the generated power to front wheels, this Nissan Almera uses the CVT

(Continuously Variable Transmission) transmission technology. The CVT system, which adopts “seamless” acceleration, delivers smooth transmission when decelerating and accelerating. To offer adaptive shift control, the Nissan Almera CVT system employs the new EXTRONIC technology.

The merit of combining both the new HR10DET engine to X-TRONIC CVT in the 2021 Nissan Almera is fuel efficiency, high performance that can be compared to a 1.5-litre engine and smooth in-gear acceleration. Designed to meet Thailand’s Eco-Car Programme, this modern sedan is capable of using ethanol or gasoline.

All-New HR10DET Engine   

The All-New Nissan Almera Turbo is among Nissan models that use the HR1ODET engine. In fact, all the three Nissan Almera variants use the HR1ODET engine that has a maximum power output of 100 PS and 152Nm of torque when revving between 2,400 and 4,000 rpm.

HR10DET Engine Code Breakdown

  • HR – Engine Family (a family of straight-3 as well as Straight- 4 engines)
  • 10 – 1.0L displacement
  • D – DOHC, which means Dual Overhead Camshafts
  • E – Electronic Port Fuel Injection

This 1.0-litre engine features in-line 3 cylinders with four-valves per cylinder, a 12- Valve Dual Overhead Camshaft and a turbocharger.  

To reduce turbo lug, the turbocharger is equipped with an electronic wastegate. As opposed to the conventional mechanical wastegate, the electric system uses sensors to read and control the turbo compression hence efficiently reducing the turbo lug and maintaining smooth acceleration. This system has an electric DC motor that regulates turbo boost power thus offering an instantaneous acceleration.

Boosting the cooling effect in the Almera Turbo engine is necessary for enhanced continuous performance. To allow more cold air to be compressed in the turbocharger, an intercooler is mounted at the front of the sedan. The Air Intercooler System allows cold air when the sedan is in motion.                                         

Another technology employed in all the three Nissan Almera Turbo variants is the extremely thin mirror bore coating. Since friction is known to reduce energy, a 0.2mm molten iron is sprayed onto the surfaces of the cylinder bores to form a mirror-like coating which reduces friction between the piston and the cylinder bores. This technology increases the engine’s efficiency.

In a bid to reduce engine weight and knocking probabilities, the mirror coating in then All-New Nissan Almera is reduced from the typical 2mm thickness in older models to 0.2mm. This thinness further improves heat conductivity and in return increases the headroom’s cooling effect as well as increase performance.

Due to increased efficiencies, the Nissan Almera model is applauded for its low fuel consumption which is rated at 5.4L/ 100km. Probably, the 35-litre tank capacity in the Almera variants is designed to complement the low fuel consumption rate.

The X-TRONIC CVT Transmission

The X-TRONIC CVT is today used in most of the new Nissan model variants. This transmission system is highly preferred in hybrid vehicles due to its “stepless” feel when changing gears, accelerating or decelerating. The stepless CVT system offers an even and efficient engine rpm at linear velocity.

Due to fewer moving parts in the CVT system, friction is greatly reduced and heat likely to be produced is kept at a minimum. Again, tear and wear are reduced as the rotating parts in the system are less. To better control the gears transmission ratio, the width between the “drive pulley” and the “driven pulley” is shortened.

By utilizing the CVT system, Nissan Almera Turbo variants are always in the correct gear and have a strong acceleration when starting from a standpoint. Another advantage of connecting the X-TRONIC CVT to  HR10DET engine is seamless acceleration and quiet and smooth rides.

Another utilized feature in the Nissan Almera X-TRONIC CVT transmission is the D-Step Logic System. This computer software is programmed to use accelerator pedal position, vehicle speed and application speed inputs to determine which ideal gear ratio will provide constant and smooth acceleration.

Due to the D-Step Logic system effectiveness, the system is now used in models found in Wapcar.my. These models include the Nissan Altima, Nissan Murano and Nissan Pathfinder.

Other models like Sentra and Versa are equipped with the third generation X-TRONIC transmission system. The third-generation system has a broader transmission ratio of 7:3:1 and its efficiency is higher by at least 10% compared to the standard CVT models.

The combined efficiencies derived from connecting the new HR10DET Engine to the X-TRONIC CVT system have resulted in the certification of all the Nissan Almera Turbo variants as Energy Efficient Vehicles (EEV).

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