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Hydraulic lifters were nearly universal on cars designed in the 1980s, but some newer cars have reverted to bucket-and-shim mechanical lifters. Although these do not run as quietly and are not maintenance-free, they are cheaper. [citation needed] Nearly all modern non-hydraulic lifter arrangements are on overhead cam engines. [citation needed]
Diagram of two types of adjustable antiroll bars. Some anti-roll bars, particularly those intended for use in auto racing, are externally adjustable while the car is in the pit, whereas some systems can be adjusted in real time by the driver from inside the car, such as in Super GT. This allows the stiffness to be altered, for example by ...
Small variable-frequency drive Chassis of above VFD (cover removed). A variable-frequency drive (VFD, or adjustable-frequency drive, adjustable-speed drive, variable-speed drive, AC drive, micro drive, inverter drive, variable voltage variable frequency drive, or drive) is a type of AC motor drive (system incorporating a motor) that controls speed and torque by varying the frequency of the ...
In vector control, an AC induction or synchronous motor is controlled under all operating conditions like a separately excited DC motor. [21] That is, the AC motor behaves like a DC motor in which the field flux linkage and armature flux linkage created by the respective field and armature (or torque component) currents are orthogonally aligned such that, when torque is controlled, the field ...
Hennessey Performance Engineering (HPE) is an American hypercar manufacturer and high-performance vehicle creator.. In addition to building the Venom F5 hypercar, the company specializes in 'making fast cars faster' modifying sports cars from several brands including Chevrolet, Dodge, Cadillac, Jeep, [1] Ford, GMC, and Lincoln.
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When the car is too low, the height corrector valve opens to allow more fluid into the suspension cylinder (e.g., the car is loaded). When the car is too high (e.g. after unloading) fluid is returned to the system reservoir via low-pressure return lines. Height correctors act with some delay in order not to correct regular suspension movements.
The massive stock market gains of the past two years — the S&P gained roughly 20% in 2023 and is set to gain more than that by the end of 2024 — also pose challenges to US companies. Benchmark ...