Monday, 18 Jan 2021
With no engine sound, the electric Jaguar I-Pace required a new way to warn blind, visually impaired and other vulnerable road users it is approaching at low speed.

Jaguar develops I-Pace sound to safeguard road customers

Jaguar has created a distinctive Audible Vehicle Alert System (AVAS) for its very first EV that meets and exceeds all forthcoming international legislation. Jaguar’s engineers have created a sound that can be heard at speeds up to 20kmph and exceeds the 56dB(A) minimum necessary by forthcoming European legislation – the strictest in the planet – for all new EVs from July 2019.

The I-Pace’s sound was tested by members of Guide Dogs for the Blind, the UK’s top charity for folks impacted by sight loss, as component of the testing undertaken by Jaguar. It also marks the begin of an on-going partnership in between the two organisations.

Iain Suffield, Jaguar NVH technical specialist, stated, “The absence of traditional engine noise from electric vehicles creates a problem for vulnerable pedestrians, such as the blind or visually impaired. This is especially true at low speeds in town centres and car parks. We developed the Audible Vehicle Alert System for the I-PACE to ensure the safety of all road users. Our potentially life-saving technology cannot be switched off and as the leading charity for people with sight loss, we are pleased to have the support of Guide Dogs to ensure real people are at the heart of our product testing.”

Jaguar’s engineers worked for 4 years to create a soundtrack that is audible but discreet and can’t be heard from inside the car. Initial attempts to produce a noise inspired by the sound of sci-fi spacecraft had to be shelved following pedestrians reacted by seeking up to the sky, rather than at the road, as the car approached.

Engineers tested sounds in a quantity of environments, which includes an anechoic chamber (specialist echo-totally free area) and numerous urban scenarios, just before settling on the final sound for the I-Pace. It is emitted from a speaker situated behind the front grille, can be heard in each and every path and can’t be disengaged. The alert increases in pitch and volume in line with the speed of the car and, when in reverse, is accompanied by an further tone that indicates the modify in path. AVAS is not necessary at larger speeds as there is enough wind and tyre noise for pedestrians to hear the zero-emissions car approaching.

John Welsman, policy company companion (Travel and Mobility), Guide Dogs for the Blind, stated, “Guide Dogs campaigned hard to make it compulsory for quiet vehicles to have sound generating systems built in and turned on, including when the vehicle is stationary at a pedestrian crossing. We applaud Jaguar for being the first to launch an EV which meets standards before the new legislation even comes in and look forward to working with the company more in the future.” Jaguar unveiled the I-Pace, its very first all-electric car, earlier this year to provide sustainable sports vehicle efficiency, subsequent-generation artificial intelligence (AI) technologies and 5-seat SUV practicality.

Fitted with a state-of-the-art 90kWh lithium-ion battery, two Jaguar-created motors and a bespoke aluminium structure, the I-Pace is capable of -100kmph in four.five seconds and a variety of up to 470km (WLTP).

Information Source: Muscat Daily

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