Lexus Showcases Latest Hybrid System with New UX

Lexus’s latest gasoline hybrid system will be showcased in the new Lexus UX crossover making its debut at the Paris Motor Show 2018.

It will come in two power options, the UX 250h and the UX 200h, for most European markets. The higher output UX 250h boasts a total system power output of 176 bhp employing a 2.0-liter in-line four-cylinder gasoline engine claiming more efficiency thanks to laser-clad intake valve seats with a new intake port profile; a high compression ratio of 13:1 and fuel injection combining direct and secondary port injectors.

Lexus claims extra performance efficiencies, too, from a continuously variable capacity oil pump and a variable cooling system with an electric water pump contribute. The system also helps quicker cabin heating on cold days and quicker cool-down when the air conditioner is used.

The system also sees a new generation hybrid transaxle that is more compact, lighter and has less internal friction. The transaxle mounts the electric motor generators coaxially rather than in-line resulting in a smaller and lighter package claiming reduced frictional losses by 25%. Its smaller sibling UX 200h, produces a total of 169 bhp and torque of 250 Nm.

Naturally, Lexus has prided itself with top-flight ADAS and safety features and the UX is no different boasting eight airbags, including driver and front passenger airbags; driver and front passenger knee airbags; driver and front passenger seat-mounted side impact airbags and front to rear side curtain airbags.

Its Safety System+ includes All-Speed Dynamic Radar Cruise Control, Pre-Collision System (PCS) with Pedestrian Detection, Lane Keep Assist with Lane Departure Alert and Steering Assist, Road Sign Assist (RSA), Adaptive High-beam System (AHS) and Intelligent High-Beam headlamps/Automatic High Beam (AHB).

The Pre-Collision System is coupled with the Dynamic Radar Cruise Control and the system can operate at speeds relative to a vehicle ahead that of between seven and 110mph.  Dynamic Radar Cruise Control with Road Sign Assist can reset the vehicle speed setting in line with speed limit information recognized by the RSA. PCS uses camera-based detection to recognize pedestrians in low light and its radar capability has been extended to enable detection of cyclists during the day.

The UX is capable of low-speed following, including in stop-go traffic, up to speeds of about 18mph. Other safety systems include Parking Support Alert, which can detect vehicles crossing from either side and static vehicles ahead or behind when parking.

— Paul Myles is a seasoned automotive journalist based in London. Follow him on Twitter @Paulmyles_

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