6. A power supply system and production of the fulfilled gases
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Separate characteristics are provided also in the text of the Head and in case of obligation of their performance are highlighted in bold type. |
| Power supply system | |
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General information |
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| Grades of the applied fuel | See Specifications to the Head Governing bodies and methods of safe operation |
| Volume of the fuel tank | See Specifications to the Head the Current leaving and service |
| Type of system of injection | |
| Petrol models | Electronic microprocessor system of the distributed injection (SPFI) |
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HFM-SFI |
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ME-SFI |
| Diesel models | CDI |
| Principle of measurement of a consumption of air | Termoanemometrichesky sensor (MAF) |
| System of injection of the diesel engine | |
| Type | TNVD |
| ML 270 CDI | Bosch, EDC 15C, Common rail |
| ML 400 CDI | Data are absent |
| Fuel injection order | |
| ML 270 CDI | 1-2-4-5-3 |
| ML 400 CDI | 1-5-4-8-6-3-7-2 |
| Adjusting data | |
| Turns of idling, min.-1 | |
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Petrol models |
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600 ÷ 900, are not subject to adjustment |
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600 ÷ 850, are not subject to adjustment |
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Data are absent |
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550 ÷ 800, are not subject to adjustment |
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Data are absent |
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Data are absent |
| Diesel models | |
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640 ÷ 840 |
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Data are absent |
| Restriction of turns without loading (diesel models), mines-1 | |
| ML 270 CDI | 4500 ÷ 4900 (no more than 1 second when checking transparency of the fulfilled gases) |
| ML 400 CDI | Data are absent |
| Contents WITH on single turns, at a temperature of oil of 60 °C (all petrol models) | No more than 0.5%, are not subject to adjustment |
| The maintenance of NANOSECOND on single turns, ppm (particles) (all petrol models) | 100 |
| The maintenance of CO2 on single turns (all petrol models) | 14.5-16% |
| The maintenance of O2 on single turns (all petrol models) | 0.1-0.5% |
| Contents WITH on 2200-2800 rpm (all petrol models) | 0.3% |
| Value a lambda on 2200-2800 rpm (all petrol models) | 0.97-1.03 |
| Opacity of the fulfilled gases (diesel models) | |
| EU limit | No more than 73% |
| Homological value | 56% |
| Efforts of tightening of threaded connections, Nanometer | |
| Power supply system | |
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Petrol models |
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| Bolt of fastening of the actuation mechanism of the electronic drive of a butterfly valve to the inlet pipeline (except models ML 55 AMG) | 9 |
| Fastening of the giving fuel pipe to the fuel distributive highway | |
| Models with the series 111 engine | 24 |
| Models with engines of series 112 and 113 | 38 |
| Cap nut ring of fastening of assembly of the gasoline pump/sensor of a reserve of fuel in the fuel tank | 65 |
| Collar of fastening of the locking fuel valve | 20 |
| Bolts of fastening of the fuel highway to a head of cylinders | 25 |
| Самоконтрящиеся bolts of fastening of a back stretcher to a frame | 200 |
| Самоконтрящиеся bolts of fastening of the driveshaft to a connecting flange of back differential | 50 |
| Bolts of fastening of assembly tapes of fixing of the fuel tank | 20 |
| Bolts of fastening of a longitudinal level of an obtyagivaniye of assembly tapes | 20 |
| Bolts of fastening of an assembly bracket of fixing of the additional fuel tank (model 163.174) | 20 |
| Bolts of fastening of body assembly to a frame | 65 |
| Hollow bolts of fastening of fuel pipes to the fuel filter | 27 |
| Diesel models | |
| Screws of fastening of the finishing panel of a cover of a head of cylinders | 10 |
| Screws of fastening of the finishing panel of the air distributor | 10 |
| Cap nut ring of fastening of assembly of the sensor of a reserve of fuel in the fuel tank | 65 |
| Bolts of fastening of assembly tapes of fixing of the fuel tank | 20 |
| Bolts of fastening of a longitudinal level of an obtyagivaniye of assembly tapes | 20 |
| Самоконтрящиеся bolts of fastening of a back stretcher to a frame | 200 |
| Самоконтрящиеся bolts of fastening of the driveshaft to a connecting flange of back differential | 50 |
| Flange connection of fastening of a final collector to a turbocompressor | 30 |
| Fastening of a turbocompressor to the forward catalytic converter (model 163.113) | 30 |
| Bolt of fastening of the line of removal of oil to a turbocompressor | 9 |
| Bolt of fastening of the line of supply of oil to a turbocompressor | 30 |
| Bolt of fastening of the line of supply of oil to a head of cylinders | |
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22 |
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10 |
| Bolts of fastening of a turbocompressor | 30 |
| Bolts of fastening of a basic arm of a turbocompressor to an engine case (only model 163.113) | 20 |
| Bolt of a sleeve of a path of pressurization of air (M7) | 16 |
| Bolt of a basic arm of a sleeve of a path of pressurization of air (only model 163.113) | 20 |
| Bolt of fastening of the cooling line to the top sleeve of a path of pressurization of air | 9 |
| Bolt of fastening of the servomotor of the actuation mechanism of an overshoot of inlet port (only model 163.113) | 9 |
| Nut of fastening of the plug 30 (only model 163.128) | 14 |
| Nut of fastening of the plug 50 (only model 163.128) | 6 |
| Bolts of fastening of a starter (model 163.128) | 42 |
| Bolt of fastening of the preliminary fuel pump to the top cover of a head of cylinders (models 163.113/TNVD (model 163.128) | 9 |
| Nipple nuts of fastening of the pressure head line to TNVD and the fuel highway (model 163.113) / to valvate assembly (model 163.128) | 20 |
| Bolts of coupling clamps of fastening of nozzles | |
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7 |
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To hold on on a corner 90 ° |
| Bolt of fastening of a basic arm to TNVD (model 163.113) | 9 |
| Bolts of fastening of TNVD to a head of cylinders (model 163.128) | 14 |
| Bolts of fastening of the fuel highway to a head of cylinders | |
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14 |
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20 |
| Hollow bolt of fastening of the line of leak of oil to the fuel highway (model 163.113) / to the valvate block (model 163.128) | 20 |
| Nuts of fastening of pressure head lines to the fuel highway / to nozzles | |
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20 |
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25 |
| Fastening of the sensor of pressure in the fuel distributive highway | |
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20 |
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35 |
| Bolt of fastening of the locking fuel valve (model 163.113) | 8 |
| Bolt of fastening of the valve regulator of pressure of fuel to the highway (model 163.113) / to valvate assembly (model 163.128) | |
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3 |
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5 |
| Fastening of the valvate block to the air distributor (only model 163.128) | 12 |
| Bolt of fastening of a collar of fixing of the pressure head line to a sleeve of the air distributor (model 163.128) | 8 |
| Nipple connections of pressure head lines of nozzles | 42 |
| Systems of release and decrease in toxicity of the fulfilled gases | |
| Petrol models | |
| Bolts of flange connection on a reception of a pipe (pipes) of system of production of the fulfilled gases with final collector(s) | 20 |
| Nut of a bracket of fixing of an exhaust pipe of a package of AMG (except models 163.174) | 55 |
| The screw of fastening of a basic arm of a suspension of system of production of the fulfilled gases to a case of transmission (model 163.174) | 20 |
| Самоконтрящиеся nuts of reception pipes of system of production of the fulfilled gases (model 163.174) | 29 |
| Lambda probes in system of production of the fulfilled gases / a final collector | 55 |
| Bolt of fastening of the EGR valve on a head of cylinders (except models 163.136) | 20 |
| Cap nut of fastening of a tube of EGR to the EGR valve (except models 163.136) | 40 |
| Bolts of a flange of fastening of a tube of EGR to the inlet pipeline (except models 163.136) | |
| Except models 163.136 and 163.157 | 9 |
| Model 163.157 | 8 |
| Bolts of fastening of a basic arm of the air pump (except models 163.136) | 12 |
| Diesel models | |
| Bolts of flange connection on a reception of a pipe (pipes) of system of production of the fulfilled gases with final collector(s) | 20 |
| Nut of a bracket of fixing of an exhaust pipe of a package of AMG (except models 163.174) | 55 |
| Nut of fastening of a basic arm of a suspension to a carving plate of fastening of average section of system of production of the fulfilled gases and to a transmission case | 20 |
| Bolt of a fixing collar of a joint of forward and back sections of system of production of the fulfilled gases | 55 |
| Fastening of a turbocompressor to the forward catalytic converter | 30 |
| Bolt of fastening of a basic arm of the catalytic converter to an engine case | 20 |
| Nuts of fastening of a back cross beam of the power unit to a frame (model 163.128) | 40 |
| Bolts of fastening of positioners (activators) of EGR to EGR unions on heads of cylinders (only model 163.128) | 15 |
| Bolt of fastening of a tube of EGR to EGR cooler (only model 163.128) | 15 |
| Bolts of fastening of a basic arm of positioners of EGR (only model 163.128) | 15 |
| Bolts of fastening of a cooler of EGR to positioners of EGR and the top part of the air distributor (only model 163.128) | 15 |
General information and security measures
Petrol engines
Are a part of fuel system: established in a back part of the car (under a pillow of a back seat) the fuel tank with an adsorber on absorbent carbon, fuel-supply lines, the electric fuel pump, and also the electronic system of consecutive injection operated by the control unit.
The reserve of fuel is shown to the driver on the dashboard. Gather on the petrol engine of couple of gasoline in an adsorber and move in engine combustion chambers.
Style of driving of the car has significant effect on fuel consumption. Several councils for the reasonable handling of the accelerator pedal are given below:
- After start of the engine at once start even if it occurs on a frost;
- At a car stop for a while more on 40 with, switch off the engine;
- Move always on the highest transfer;
- At the movement on long distances whenever possible support uniform speed. Avoid the movement at high speeds. Drive the car circumspectly. Without need you do not brake;
- You transport the car excessive freight. If the luggage carrier is not used, remove it from a roof;
- Check air pressure in tires. Do not allow excessive pressure decrease.
Diesel engines
Are a part of fuel system: established in a back part of the car (under a pillow of a back seat) the fuel tank, the fuel filter, nozzles, fuel tubes and hoses, the fuel reserve sensor located in a tank and the block of electronic control the engine.
Fuel moves the special pump via the filter. In the filter the dirt and water which is contained in fuel accumulates.
The engine is operated the electronic system similar to a control system of petrol engines. The system operates operation of the engine, analyzing information arriving from a large number of sensors.
On diesel models there is no accelerator cable. Instead of it on a pedal the sensor of its situation is installed.
The fuel cut-off valve at switching off of ignition is absent. To kill the engine at switching off of ignition, the control unit of the engine sends a signal which, in turn, stops supply of fuel to nozzles to the TNVD control unit.
The fuel system is designed so that not to allow air "suction" in the absence of fuel in a tank. The control unit constantly checks fuel level in a tank, processing information arriving from the sensor of a reserve of the fuel located in a tank. When falling a reserve of fuel to a certain level the control unit activates a control lamp on a combination of devices then forcibly causes admissions of supply of fuel, limiting to that the maximum speed. It proceeds until fuel level in a tank does not exceed an admissible mark.
The fuel system of diesel engines is very reliable. When using pure fuel and performing regular service it has to function regularly before the termination of service life of the car. After very big run internal components of nozzles can wear out, and they will need to be repaired. As the pump - nozzles have a difficult design, repair is recommended to be carried out in a specialized workshop.
Security measures and rules of respect for purity during the work with fuel system
During the work with fuel system it is necessary to observe the following security measures and purity:
- Do not approach the place of performance of work with naked flame, do not smoke and do not turn on any heating devices! You keep in readiness the fire extinguisher;
- You monitor normal ventilation of a workplace, - fuel vapors are poisonous;
- The fuel system is under pressure. When opening system fuel can escape under pressure, - use goggles. Collect the spilled fuel by rags;
- During the work with components of a power supply system of the diesel engine observe special precautionary measures. In special degree it belongs to nozzles. Keep in mind that fuel pressure at an exit makes about 1100 atm of nozzles, - do not allow hit of any parts of a body under a fuel stream;
- Hose connections fasten by means of tape or tightening collars. Tightening collars need to be replaced with tape collars or collars of the last design surely. For installation of tape collars special devices are issued (for example, HAZET 796-5);
- Carefully clear connections and the places adjoining to them before opening;
- Stack the removed components on a pure lining and cover with polyethylene, paper or NEVORSYaShchEYSYa rags;
- Carefully close the open ends of nipple sockets, or cork them with suitable caps;
- Establish into place only pure details, - take replaceable components from packing only just before installation. Do not use the details stored in an unpacked look;
- Avoid use of compressed air at open fuel system, whenever possible try not to move the car;
- Do not apply the sealants containing silicone, - the particles of silicone which got to the engine do not burn down and can be the reason of failure of oxygen sensors.
Security measures at removal of the fuel tank
- Before removal of a tank merge from it fuel or pump out fuel the pump which is specially provided for this purpose;
- The fuel tank is removed from the lower party of the car. Before a detachment of collars of fastening of a tank bring to it from below a jack and linings;
- The empty tank is explosive and cannot be utilized in such look. Before utilization the tank has to be cut on a part. You watch that at the same time there was no spark. For this purpose hand over the fuel tank in the specialized enterprise;
- After installation of a tank into place start the engine and check tightness of all connections.