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Mazda 323since 1985 of releaseRepair and car operation |
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Mazda 323 + Introduction + Petrol engines + System of greasing of the engine + System of cooling of the engine + ignition System + Power supply system, carburetor, system of injection of fuel - Diesel engine Principle of operation of the diesel engine Removal and installation gear belt/adjustment of a drive of the distributive mechanism System of preheat of the diesel engine Check of system of preheat Air removal from a power supply system Check/replacement of the electromagnetic valve of interruption of supply of fuel Adjustment of a drive of gas Check/adjustment of number of turns of idling Removal and installation of nozzles Removal and installation of the vacuum pump + System of production of the fulfilled gases + Coupling + Manual transmission + Automatic transmission + Suspension bracket and steering system + Brake system + Wheels and tires, body, car coloring, care of the car + electric equipment System + Heater, lighting system, devices + Governing bodies and operation receptions + Electric circuits |
Principle of operation of the diesel engine At the diesel engine arriving clean air is exposed to high extent of compression. Thanks to it the temperature in cylinders rises above temperature of ignition of diesel fuel. When the piston is in situation before VMT, in compressed and warmed up to temperature +600°С air is injected diesel fuel. Diesel fuel ignites in itself, spark plugs here are not required. On the cold engine the necessary temperature of ignition is not reached and consequently preheat is necessary for the engine. For this purpose in each vortical chamber the glow plug takes place. Fuel подсасывается from a tank the toplivoraspredelitelny pump of a high pressure. In the fuel pump of a high pressure (TNVD) pressure necessary for injection (about 130 Bar) and fuel is created distributed between cylinders as ignition. At the same time the regulator in TNVD operates number of injection depending on the provision of a pedal of gas. Through nozzles fuel is injected into vortical chambers of each cylinder. Thanks to a chamber form air gets a certain whirl which provides optimum mixture of injected fuel with air in a compression step. Before hit in TNVD fuel passes through the fuel filter. Pollution and water there are late. Extremely important according to the instruction to merge from the filter a sediment and to replace it. Fuel pump of a high pressure the unattended. All mobile parts of the pump are greased with diesel fuel. TNVD is actuated from the crankshaft through a gear belt through which the camshaft also is actuated. As the diesel engine works with spontaneous ignition and cannot be disconnected by switching off of a food of system of ignition, it has the electromagnetic valve. At switching off of the lock of ignition a food of the electromagnetic valve interrupts, and the valve blocks the channel of supply of fuel. Thanks to it fuel interruption of supply before locking of the lock of a steering column is provided. At engine start on the electromagnetic valve tension via the ignition lock moves, and it opens the channel of supply of fuel. At works on system of injection of the diesel engine it is necessary to observe purity rules, see. Head the Power supply system, the carburetor, system of injection of fuel, the Section of the Rule of purity at work with a power supply system. |
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