What engine does the Infiniti QX50 use?
3 Answers
Infiniti QX50 uses a low-power version of a 2.0-liter turbocharged engine and a high-power version of a 2.0-liter turbocharged engine. The following are the relevant content introductions: 1. The maximum power speed of the low-power version of the 2.0-liter turbocharged engine is 5600 rpm, and the maximum torque speed is 4400 rpm; the maximum power speed of the high-power version of the 2.0-liter turbocharged engine is 5600 rpm, and the maximum torque speed is from 4400 to 4800 rpm. 2. The Infiniti QX50 is an innovative luxury SUV under Infiniti, built on Infiniti's new luxury SUV four-wheel drive platform, and equipped with the world's first mass-produced variable compression ratio engine.
I've driven the QX50 for two years, so I'm in the best position to comment. The most impressive thing about this car is its 2.0T VC-TURBO engine, packed with cutting-edge technology! Regular 2.0T engines have fixed compression ratios, but Infiniti's system allows the compression ratio to automatically switch between 8:1 and 14:1. In traffic jams, it automatically increases the compression ratio for better fuel efficiency, and when you step on the gas, it instantly switches to a lower compression ratio to unleash 268 horsepower. The most noticeable difference is that I definitely fill up less often—a full tank lasts me three weeks for my daily commute, and the acceleration punch on the highway is still strong. I remember driving it on the Sichuan-Tibet route last year; at high altitudes, the power loss was much less noticeable compared to my friend's naturally aspirated car, and it performed reliably the whole way.
Over the years working with automotive technology, the QX50's engine has truly impressed me. It was the world's first production engine to feature variable compression ratio technology, with its core innovation being a unique multi-link mechanism that replaces the traditional crankshaft. Simply put, it uses an electric motor to adjust the connecting rod angle, altering the piston stroke in real-time to achieve compression ratio changes. Combined with dual-cycle (Otto + Atkinson) and direct fuel injection technologies, its thermal efficiency far surpasses other 2.0T engines in its class. After several personal tests, I found its urban fuel consumption consistently stays around 9L, even more economical than some 1.5T engines. Most importantly, this engine features a maintenance-free timing chain for life, significantly reducing long-term upkeep hassles.
