Mining capacity of BMW F20
It refers to the free clearance of the steering wheel and the angle that the steering wheel can turn without deflection of the steering wheel
1. Regulatory requirements for vehicle steering clearance:
according to Article 6.4 of the national standard GB 7258-2017 technical conditions for motor vehicle operation safety, the requirements for vehicle steering clearance are as follows:
A) motor vehicles with maximum design speed greater than or equal to 100kN / h: 15 °
b) three wheeled vehicle: 35 °
C) other motor vehicles: 25 °
2. The reason of automobile steering clearance:
between the steering wheel and the steering wheel, there are steering transmission shaft, steering gear, steering transmission mechanism and other parts, the connection between them can not be without clearance, and there can not be deformation in the steering process, so the comprehensive reaction of each clearance and deformation on the steering wheel proces free stroke
automobile steering principle
automobile steering is to use the steering wheel to drive the steering gear, so as to make the rack and pinion steering gear work, make the front tie rod swing left and right, and make the front wheel proce an angle, so as to proce the steering effect
automobile steering system is a system used to maintain or change the driving or reversing direction of the automobile, which is located in the front of the automobile and mainly divided into mechanical steering system and power steering system
1. Mechanical steering system:
the mechanical steering system mainly uses the driver's physical strength as the steering energy, and is composed of steering control system, steering gear and steering transmission system
2. Power steering system:
the power steering system takes the physical strength of the driver and the power of the engine as the steering energy. In general, most of the energy required for steering is provided by the engine. Power steering system is more portable than mechanical steering system, but it is more prone to failure than mechanical steering system because of its complex structure
Because cars are constantly updated, old cars will definitely stop proction. BMW 2 series (German: BMW 2er) is a compact car line of BMW, a German car manufacturer. Its first coupe (F22) has been proced since December 2013 and put on the market since March 8, 2014
Like Mercedes Benz, BMW pursues the goal of high quality, high performance and high technology, and its output is not high, but it enjoys almost the same reputation as Mercedes Benz in the world automobile instry and users. BMW's acceleration performance and high-speed performance are among the best in the world's automobile instry, so BMW is the first choice of police cars in various countries. BMW's motorcycles are quite expensive in the international market, even surpassing luxury cars, with a price of about $30000. BMW procts have good sports genes, so they are often popular in the world's car racing activities< br />1: the steering gear is short of oil, please maintain the steering gear
2: the clearance of the front suspension system is too large, and the lower arm can be replaced after inspection
3: loosen the steering ball head and replace it after checking the car
4: measure the front speed (i.e. direction guide angle)
5: check whether the direction booster leaks oil or the booster oil is missing
6: check whether the tire pressure is too low or whether the tread pattern is worn off. If the front lower arm is damaged, replace it
7: if the first few items are not, you'd better do four-wheel alignment, which will solve the problem