E46 series BMW 3
since 1998 of release
Repair and car operation
E46 series BMW 3
+ BMW 3 Cars (Е46)
+ Current leaving and service
- Procedures of repair of the engine
Removal and installation of the bottom cover of an impellent compartment
Removal and installation of a box of an air inlet
Removal and installation of the inlet pipeline
Removal and head installation cylinders / replacement of sealing laying
Removal and installation of camshafts
Removal and installation of the vacuum pump
Removal, installation and tension of a maple belt
+ System of greasing of the engine
+ Systems of cooling, heating
+ Power supply systems, injection and release
+ engine Electric equipment
+ RKPP and transmission line
+ Automatic transmission
+ Coupling and power shafts
+ Brake system
+ Suspension bracket and steering
+ Onboard electric equipment
+ electric equipment Schemes
Procedures of repair of the engineM43TU engine (316i, 318i)
M52TU engine (320i, 323i, 328i)
M52TU engine elements
M47 engine (320d)
The car can be equipped with the ryadny 4-cylinder petrol engine, the 6-cylinder petrol engine or a 4-cylinder turbodiesel. The power unit is located along the car and is taken out up by the special crane.
Complete set options:
Model 316i, 318i
The 4-cylinder petrol M43TU engine in volume of 1.9 l – dvukhklapanny, with a verkhneraspolozhenny camshaft. The camshaft is given in rotation by a chain. Valves are actuated through a roller yoke. For compensation of vibration of the engine two balancing shaft, located under cranked shaft serve. A drive of valves – roller. An inlet path with changeable length of DISA.
Engine 330i characteristics
Model 320i, 323i, 325i, 328i, 330i
The 6-cylinder petrol M52TU engine has a head of cylinders and the block of cylinders from an aluminum alloy. The alloy has the improved heat conductivity and smaller weight in comparison with cast iron. 4-клапанная the head of cylinders has two camshafts with a drive from a chain with the mechanism of regulation of camshafts of VANOS. Thus both camshafts depending on number of turns and loading of the engine turn rather corresponding asterisk so that to receive the optimum moment of opening of valves. The knot copes from an engine monitor.
In 4-cylinder turbodiesel М47 two camshafts with the top arrangement have a chain drive and influence valves through a roller yoke. The second chain actuates the fuel pump of a high pressure. A drive of valves – roller. The diesel engine has a turbo-supercharging with changeable geometry of the turbine (VTG) and cooling of nadduvayemy air. The head of cylinders is made of an aluminum alloy. The engine is supplied with the oxidizing catalytic converter and system of a retsirkulyatsiya of the fulfilled gases.
6-cylinder turbodiesel М57 is characterized by exclusively high torque thanks to the general pressure head highway (common rail) of a high pressure on which fuel to nozzles moves. The head of cylinders is made of an aluminum alloy. The engine is supplied with the oxidizing catalytic converter and system of a retsirkulyatsiya of the fulfilled gases.
Are supplied with hydrojacks of klapanny gaps.
Greasing of engines is carried out by the oil pump which at 6-cylinder engines (320i, 323i, 328i) settles down in a forward part of the pallet of a case and brought into rotation by a chain from a cranked shaft. At models 316i, 318i the oil pump is located in a cover of a box of the distributive mechanism on the end of a cranked shaft and connected to it through shlitsevy connection. Sucked-in oil arrives through openings and on pipelines to bearings of cranked and distributive shaft, and also to working surfaces of cylinders.
The pump of cooling liquid is located in a forward part of the block of cylinders and is brought into rotation by a maple belt which at the same time actuates auxiliary units, namely, the generator, the pump of the power steering and the conditioner compressor.
It is necessary to mean that the system of cooling of the engine should be all-the-year-round filled with a mix from means for protection against corrosion and freezing, and also water not containing lime. The fan of a radiator has the electric drive. The 6-cylinder engine with the conditioner on a shaft of the pump of cooling liquid in addition has a fan of a radiator which is connected via the vyazkostny coupling at the corresponding temperature. By means of so-called cooling according to characteristics at petrol engines the control system of the engine regulates temperature of opening of the thermostat and the engine temperature for achievement of the minimum fuel consumption is optimized.
On all petrol engines regulation of the moment of ignition watching a detonation is applied.