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What is the most modern technology used in internal combustion engines?

What is the most modern technology used in internal combustion engines?

SGCM_editorial

Entry posted by SGCM_editorial ·

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The most modern technology used in internal combustion engines currently is Variable compression ratio engine ( VCR ).
 

As the name suggests, the motor may alter the compression ratio under operating circumstances. The technology had existed as a prototype for the previous few years. Currently, Infiniti (the luxury brand of Nissan) is prepared to display its VCR engine, the first ready-to-produce VCR engine, to be exhibited in the 2016 Paris Motor Show.
 

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2016 Paris Motor Show by Maxime Joly, on Flickr
 

Why need a VCR engine?

Generally, a traditional petrol engine makes more power from a specified engine size using a turbocharger. In a Diesel engine, Turbocharging's approach looks excellent, as they operate heterogeneously injecting more fuel into denser air.

On the other hand, petrol engines do not have the flexibility like diesel engines; a petrol engine's mixing power impacts engine efficiency. Detonation and knocking prevail when the turbocharger boosts over specific concentrations as the general compression ratio rises (piston compress + turbo-added pressure).The first solution to the issue may be to use a reduced engine compression ratio so that more dense air can deliver to the turbo. However, the downside is that lowering the percentage of compression can affect the economy of petrol.

Hence the designer must trade-off some Compression ratio for power and rest for the economy.

A variable compression ratio engine

The main characteristic of the engine is to use a compression ratio of 14 at the lower throttle and low speeds while cruising. So you can achieve the highest fuel economy. The compression ratio of the cylinder falls to about 8:1 during acceleration or high-velocity acceleration, this is also the case when the turbo kicks in. Turbo, therefore, rams more air into the engine, making it more powerful.

Infiniti patented such systems at the end of 2001. It is also possible to operate the VC-T (Variable Compression Turbo) motor on Atkinson cycles.

Currently, the VC-Turbo engine is paired in INFINITI QX50, a luxury compact SUV that can rival the likes of Lexus NX, Volvo XC40 and Mercedes Benz GLC.

"It's currently one of the most affordable premium mid-sized SUV in the market right now" - Julian Kho, Editor of sgCarMart.
 

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