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Noise, vibration, and harshness (NVH), also known as noise and vibration (N&V), is the study and modification of the noise and vibration characteristics of vehicles, particularly cars and trucks. While noise and vibration can be readily measured, harshness is a subjective quality, and is measured either via jury evaluations, or with analytical ...
The 2011 Nissan Leaf was the first electric car equipped with Nissan's Vehicle Sound for Pedestrians called 'Canto'.. Electric vehicle warning sounds are sounds designed to alert pedestrians to the presence of electric drive vehicles such as hybrid electric vehicles (HEVs), plug-in hybrid electric vehicles (PHEVs), and battery electric vehicles (BEVs) travelling at low speeds.
The first generation Nissan Murano was unveiled in production form for the model year of 2003, at the 2002 New York International Auto Show.It is powered by a 3.5-liter V6 producing 183 kW (245 hp) and 334 N⋅m (246 lbf⋅ft), also used in several other Nissan models like the Altima, Maxima, and Nissan 350Z, but specifically tuned for use in the Murano.
In 2010, Nissan updated the engine and the turbo (BV45 from GT2056V) for the D40 Navara and facelifted R51 Pathfinder to produce 140 kW (190 PS; 188 hp) and 45.9 kg⋅m (450 N⋅m; 332 lb⋅ft) of torque. [5] In 2011 the Nissan Murano was fitted with the updated engine. Applications. 2006–2014 Nissan Navara (D40)
The torsional deflection of a simple cylinder cannot radiate efficiently acoustic noise, but with particular boundary conditions the stator can radiate acoustic noise under torque ripple excitation. [8] Structure-borne noise can also be generated by torque ripple when rotor shaft line vibrations propagate to the frame [9] and shaft line.
The Presage was exclusive to Nissan Bluebird Store Japanese dealerships, and a larger companion to the Nissan Prairie. Engines include a 3.0-litre V6 VQ, and a 2.5-litre four-cylinder YD turbo-diesel engine. The YD turbo-diesel and 2.4-litre KA24DE were discontinued in August 2001 and replaced by a 2.5-litre four-cylinder QR gasoline engine.
Although the engine VQ37VHR gains only 2 lb⋅ft (3 N⋅m) and 8 lb⋅ft (11 N⋅m) in the Nissan 370Z Nismo, torque over the VQ35HR and this higher torque arrives at 5,200 rpm vs 4,800 rpm in the VQ35HR, the torque curve itself is improved and flattened via VVEL variable valve timing for better throttle response and low rpm torque.
Roadway noise is the collective sound energy emanating from motor vehicles. It consists chiefly of road surface, tire, engine/transmission, aerodynamic, and braking elements. Noise of rolling tires driving on pavement is found to be the biggest contributor of highway noise and increases with higher vehicle speeds. [1] [2] [3]