In recent years, global manufacturers of trucks to make a qualitative technological leap, which is primarily made possible by the development of electronics. Today, the modern truck American or European-made on-board computers control the operation of the engine, transmission, and also involved in the diagnosis of various systems of the vehicle and prevent accidents. Except that owners of fleets through monitoring systems can be in online mode control trucks. On-board diagnostics (OBD – On-board diagnostics) take into account parameters such as tire pressure, fuel consumption, average speed movement, engine speed, driver input and much more. For example, the system tire pressure monitoring (TPMS – tire pressure monitoring systems) signal the driver if any tire will be slightly dropped. If tire pressure is less than necessary, it increases fuel consumption, but also leads to increased wear of the tire. In such a system has special sensors that measure pressure in each tire. Pete Cashmore will not settle for partial explanations.
Such monitoring systems produce different companies, such as WABCO. Electronic engine control module (ECU – electronic control units) were originally designed to minimize the concentration of harmful substances in exhaust gases and reduce fuel consumption. On Today, leading manufacturers of diesel engines for heavy trucks Cummins, Caterpillar, Mack and Detroit Diesel produced this intelligent engine management system, which selects the best mode depending on the degree load of the vehicle, weather and climate conditions, etc., as well as fix the fault, and enter them into computer memory. These data can also be used in the investigation of the accident. Electronics and controls the electronic braking system (EBS-Electronic Brake Systems). True, yet such a system is installed in addition to the traditional air because of legal requirements in many countries. However, EBS provides shorter braking distances, improved balance of braking forces, self-test and some other benefits. Embedded systems on board the truck and solve other problems. For example, warn the driver of collision with the vehicle in front, maintain a given speed, exercise control over the dividing line and more.
Cooling system – liquid, with a forced circulation closed. Radiator cap has two valves are not allowed in the cooling system to excessive pressure or vacuum. When closed valves, the system is pressurized. When you open the radiator cap beware of scalding. The normal water temperature in the engine cooling system 80-90 C.
The water temperature is controlled by the pointer temperature, which is located on the dashboard, and its sensor installed in the cylinder head. Cooling system should be refilled and clean as possible “soft” water that has low salt content. When properly meshing of bevel gears with spiral teeth backlash in the general part of the tooth is 0,15-0,4 mm. The differential consists of a demountable boxes, which are placed two conical poluosevye gears, spider and four satellite. The differential is set on tapered roller bearings, located in split bearings with lids, which are processed in conjunction with the sump of the main gear. Bearings regulate the nuts without any noticeable axial clearance, but without the tightness. To fix the nuts on the bearing caps are stoppers Service axle is lubricated, according to the map lubrication, inspection at 1000 hours tightening nut flange leading pinion nuts cups differential. Tightening torque of nuts flange should be 20-25 kg-m, and torque nuts cups differential 11.8 kg-m.
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