2022 Nissan Sentra Sr on 2040-cars

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Is the skill of rev matching being lost to computers?

If the ability to drive a vehicle equipped with a manual gearbox is becoming a lost art, then the skill of being able to match revs on downshifts is the stuff they would teach at the automotive equivalent of the Shaolin Temple. The usefulness of rev matching in street driving is limited most of the time – aside from sounding cool and impressing your friends. But out on a race track or the occasional fast, windy road, its benefits are abundantly clear. While in motion, the engine speed and wheel speed of a vehicle with a manual transmission are kept in sync when the clutch is engaged (i.e. when the clutch pedal is not being pressed down). However, when changing gear, that mechanical link is severed briefly, and the synchronization between the motor and wheels is broken. When upshifting during acceleration, this isn't much of an issue, as there's typically not a huge disparity between engine speed and wheel speed as a car accelerates. Rev-matching downshifts is the stuff they would teach at the automotive equivalent of the Shaolin Temple. But when slowing down and downshifting – as you might do when approaching a corner at a high rate of speed – that gap of time caused by the disengagement of the clutch from the engine causes the revs to drop. Without bringing up the revs somehow to help the engine speed match the wheel speed in the gear you're about to use, you'll typically get a sudden jolt when re-engaging the clutch as physics brings everything back into sync. That jolt can be a big problem when you're moving along swiftly, causing instability or even a loss of traction, particularly in rear-wheel-drive cars. So the point of rev matching is to blip the throttle simultaneously as you downshift gears in order to bring the engine speed to a closer match with the wheel speed before you re-engage the clutch in that lower gear, in turn providing a much smoother downshift. When braking is thrown in, you get heel-toe downshifting, which involves some dexterity to use all three pedals at the same time with just two feet – clutch in, slow the car while revving, clutch out. However, even if you're aware of heel-toe technique and the basic elements of how to perform a rev match, perfecting it to the point of making it useful can be difficult.

Nissan plans to slash May car output in Japan by 78%

TOKYO — Nissan plans to slash the number of cars it produces at home in May by 78% from last year, as the impact of the coronavirus shakes the troubled automaker which has already been struggling with falling sales. As global automakers reel from plunging sales amid lockdowns imposed in many countries to curb the spread of the virus, the hit is particularly severe for Nissan, whose profitability has been deteriorating as it grapples with the turmoil that followed the ousting of former Chairman Carlos Ghosn. Nissan plans to manufacture around 13,400 vehicles next month, according to documents seen by Reuters, compared with nearly 61,000 units made in May last year. The cut represents a big hit to Nissan's plant in Kyushu, southern Japan, which the automaker plans to operate on a single shift for much of this month and all of next month, due to a lack of demand for the Rogue Sport SUV crossover model, according to the documents, which are not public. Output will decline 70% from initial plans to build around 44,800 units. In June, domestic production will be cut to 33,700 vehicles, a drop from around 63,700 units last year, and down 43% from a previous plan for around 59,300. Nissan declined to comment on its production plans. The automaker has stopped production at its plant in Tochigi, north of Tokyo, since early April, and plans to keep output suspended through the end of May. Periodic stoppages at Nissan's Oppama plant in Kanagawa Prefecture have been common since earlier this month. The coronavirus pandemic has piled urgency on Nissan's efforts to downsize, after two years of falling sales, deteriorating margins and depleting cash reserves has forced the company to restructure. Nissan's management has become convinced that the company needs to be much smaller and its latest recovery plan due next month will likely assume a cut of 1 million cars to its annual sales target, senior company officials told Reuters earlier this month. Automaking partner Mitsubishi, also suffering from a cut to demand for its cars, is planning to slash domestic output by nearly one-third over the next two months. As both Nissan and Mitsubishi struggle with tanking sales, production plans show one bright spot: Nissan is planning an increase in production of the Nissan Dayz minicar model, which Mitsubishi manufactures for Nissan for the Japanese market. Related Video: This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings.

Nissan recalls 3.5 million vehicles over airbag sensor

Nissan is recalling 3.53 million vehicles globally – 3.2 million in the United States – because the front passenger airbag may or may not deploy properly in the event of a crash. In affected vehicles, the occupant sensing system may not properly register a person sitting in the passenger seat. Passenger-side airbags in roughly 622,000 Nissan Sentra models built between 2013 and 2016 may deploy in crashes when they shouldn't, such as when a child is in the seat. 2016-2017 Nissan Maxima, 2013-2016 Nissan Altima, NV200, and LEAF, 2013-2017 Nissan Pathfinder, 2014-2016 Nissan NV200 Taxi, Infiniti QX60 and Q50, 2014-2017 Nissan Rogue, 2015-2016 Nissan Murano, Chevrolet City Express and 2013 Infiniti JX35 vehicles suffer from the opposite problem. In those models, the airbag may not deploy when it is supposed to. Nissan is aware of at least three crashes where airbags in one of the above models did not function properly, resulting in "moderate injuries." There have already been four recalls since 2013 for similar issues in Nissan vehicles. If you own one of these cars, expect a letter from Nissan in short order (or from GM if you own a Chevy City Express). Related Video: RECALL Subject : Passenger Air Bag may not Deploy due to OCS Error , 1 INVESTIGATION(S) Report Receipt Date: APR 26, 2016 NHTSA Campaign Number: 16V244000 Component(s): AIR BAGS Manufacturer: Nissan North America, Inc. SUMMARY: Nissan North America, Inc. (Nissan) is recalling certain model year 2016-2017 Nissan Maxima, 2013-2016 Nissan Altima, NV200, LEAF and Sentra, 2013-2017 Nissan Pathfinder, 2014-2016 Nissan NV200 Taxi, Infiniti QX60 and Q50, 2014-2017 Nissan Rogue, 2015-2016 Nissan Murano, Chevrolet City Express and 2013 Infiniti JX35 vehicles. In these vehicles, the front seat passenger Occupant Classification System (OCS) may incorrectly classify an adult passenger as a child or classify the seat as empty despite it being occupied. As a result, the passenger frontal air bag may be turned off and not deploy in the event of a crash. CONSEQUENCE: If the passenger frontal air bag does not deploy as intended in the event of a crash, the passenger is at an increased risk of injury. REMEDY: Nissan will notify their owners. Chevrolet City Express owners will be notified by General Motors.