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Such add-on overdrive boxes were available from the 1930s to the 1970s for cars and light trucks. Today, most petrol and diesel cars and trucks come with an overdrive transmission because of the benefit to fuel economy. [4] Overdrive is included in both automatic and manual transmissions as an extra gear (or two in some cases). [5]
A clutch delay valve is an automotive component added to the clutch system of an automobile to control clutch engagement speed. Its purpose is to engage the drivetrain of an automobile without introducing shock to the drivetrain components by engaging too quickly.
Before that, the top gear ratio for automobiles was 1:1. Thus, adding a fifth, higher ratio (0.75:1, etc), makes it an "overdrive" transmission. I don't think it's because the car is "overgeared", especially as that depends on the specific car, the gearing of the final drive, etc. Many cars can make top speed in overdrive.
New policy statements from the leading pediatricians' association asks parents to keep their children in rear-facing seats when traveling in the car until age 2, or until they reach the height and ...
Car seats are designed to absorb some of that force to keep the child in the seat safe. The plastic of a car seat can be damaged or weakened by a crash, even if the seat doesn’t show any signs ...
New research from AAA and baby brand Chicco finds that some parents aren't using car seats or passenger restraints the right way. New study shows nearly half of car crash injuries and deaths of ...
A freewheel clutch is now used in many motorcycles with an electric starter motor. It is used on many combustion-engined mowers. It is used as a replacement for the Starter solenoid (or the older Bendix drive) used on most car starters because it reduces the electrical needs of the starting system and gives reduced complexity. [citation needed]
Cruise control systems frequently include a memory feature to resume the set speed after braking and a coast feature to reduce the set speed without braking. When the cruise control is engaged, the throttle can still accelerate the car, but once the pedal is released, it will slow down the vehicle until it reaches the previously set speed.