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In spark-ignition internal combustion engines, knocking (also knock, detonation, spark knock, pinging or pinking) occurs when combustion of some of the air/fuel mixture in the cylinder does not result from propagation of the flame front ignited by the spark plug, but when one or more pockets of air/fuel mixture explode outside the envelope of the normal combustion front.
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 ...
These issues can cause excess oil burning, heavy smoke from tail pipes and misfires. Other common issues are premature wear of engine lifters and camshafts as well as cam shaft adjusters. Common signs of this is a ticking noise at cold start of the vehicle.
The 4B11T offers a broader torque curve, producing more torque than the 4G63 at all engine speeds, helped by the engine's square bore and stroke design, both measure 86 mm (3.39 in). Redline tachometer hashes start at 7,000 rpm, with a fuel cutout (true redline) at 7600 rpm to protect the engine. [10]
Heather Graham is running hot on a New Year's vacation!. The actress, who will celebrate her 55th birthday later this month, rung in 2025 on Instagram as she posed in a navy-blue bikini in a hot ...
Russian President Vladimir Putin said he would enquire about the whereabouts of Austin Tice, the American journalist missing in Syria, while responding to a question from an NBC correspondent at ...
When and where to watch the ball drop in Times Square. Viewing areas opened at 3 p.m. Tuesday. Entry was first-come, first-served at checkpoints located at 49th, 52nd and 56th streets on Sixth and ...
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.