Plants vs. Zombies 2 against the electric shade plants
We Losing Touch comprehensive comparison testing of electrical apparatus and hydraulic steering ASSIST.
Technology is a fickle friend, pushing us forward with one hand while charging exorbitant tolls with other modern engines that impress us with the power and efficiency are decoupled from manual transmissions to help them sing the stout body structures keeps us from danger in an accident but are so heavy and difficult to see on that we are more likely to fall on risks easily avoided by truly electronic wieldy car stability and traction aids are wonderful, except when there's no way to disable them.
The latest technological cross steering is electrically assisted EPS we wear hydraulic assistance Replacing an electric motor controlled by computer seemed like a reasonable idea when it surfaced one day each control of the car will be by wire; EPS today looks like a step in this direction, but in the last decade of conducting EPS equipped cars, we found the lack of sensation, improperly adjusted, and sometimes just plain weird compared to hydraulic configurations assistance who received more than half a century of development.
This is important because management is the main line of communication with the driver's car; distortion in the guide channel makes any more difficult perception to understand.
Mechanism internal cavity direction is divided into two chambers by a sealed piston secured to the rack application of pressurized hydraulic fluid to one side of the piston while allowing the fluid to return from the other side to a reservoir provides steering assist A valve fixed to the control pinion shaft the flow of hydraulic fluid.
Hydraulic pressure control valve Pinion Gear hydraulic return hydraulic lines to the piston of the rack housing.
In order to provide steering assist, an electric mounted on the side of the rack housing motor drives a ball screw mechanism via a toothed rubber belt The screw engages with a spiral cut outside the rack and pinion steering torque sensor attached to the pinion shaft indicates a control computer when providing assistance.
Pinion shaft pinion steering torque sensor and pinion electric motor housing mechanism ballscrew Steering Rack drive belt.
Manufacturers are energetic for EPS because eliminating a hydraulic pump driven by the engine increases fuel consumption by about 1 mpg Before HPS hydraulic power steering going the way of the buggy whip, though, we wanted to understand the differences we BMW has designed this test conveniently offers both types of aid on 5 series models equipped with four-wheel drive HPS survive here because the slightly larger EPS unit integrates only the four-cylinder model BMW 528i a 61125 xDrive served our EPS lab rat while his brother 535i xDrive 69695 for HPS is beyond the type of steering, notable differences are six-cylinder 535i xDrive against the four in the 528i xDrive, 143 pounds more weight on the more expensive BMW front axle and tires 40 set of 19 inch 535i with respect to 18-inch 45-series rubber on 528i runflat design, the tire all s base easons and the section width of 245 mm are common to both.
We divided our test into two segments of a practice, the assessment of purely subjective conduct and proving grounds instrumented tests for the first phase, a steering committee of 11 chief editors with decades of experience led BMW without knowing what kind of leadership help was at work on our southeast Michigan favorite test loop 13 8 miles from boos and hollow lefts and rights scanning decreasing radius; essentially our own North American Nordschleife Each driver completed a bulletin of 10 items per car Then the two BMWs were handed to colleagues in Cayman Dynamics where engineers integrate a network of sensors and recorded for analysis of the results of the various tests management.
Many of our results were predictable; some surprised us the first discovery was that neither BMW excels in steering feel and feedback, a consistent observation with poor reviews gave us all 5 series, including the M5 since the sixth generation design came there three years ago.
After griping about PSE for years, the shocking revelation is that the editorial staff favorite CD BMW's electric system on its hydraulic assistance Total votes in seven of the ten rating categories EPS favored by two to eight items each hydraulic shone in Comments only three categories where he won the comparison with the center of four points and tied with EPS in our mid-to-maneuver and understeer extreme performance assessments.
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Power vs, electrical, pinion shaft fixed.