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Gasoline engines

Specifications

1 - Unleaded

2 - TSZ transistorized ignition system

3 - EZA: electronic ignition system

4 - 87 on 89 MY .: 42 kW (57 hp.); 89 90 MY .: 41 kW (56 hp.).

Mazda 323 is equipped with four-cylinder in-line engine, water-cooled, transverse to the direction of motion.

The cast from gray cast iron cylinder block built. When repairing the engine, for example, because of heavy wear or grooves on the mirror cylinders can be chiseled and polished. After that you want to install a larger oversize pistons. At the bottom of the cylinder crankshaft is resting on the crankshaft bearings. The connecting rods are connected to the crankshaft through the bearings. Below the cylinder block is made of sheet metal or aluminum sump, which collects necessary for lubrication and cooling of engine motor oil.

There are four design the cylinder head made of aluminum. These differences are the location, distribution and valves, as well as in the number of camshafts.

Models with 1.7 liter diesel engine (engine designation PN) have a cylinder head with a single camshaft, which drives through the rockers 2 valves per combustion chamber (one inlet and one exhaust valve). The camshaft is driven by a toothed belt. Intake and exhaust manifolds are installed on one side of the cylinder head.

Models with petrol engine of 1.1 liter, 1.3 liter and 1.5 liter (designations (E1, EZ, E5) are the cylinder head, intake and exhaust ports which are opposed from one cam, which actuates the rocker arm through at 2 valves per combustion chamber (one inlet and one exhaust valve). camshaft driven chain.

Models with petrol engines of 1.4 liters, 1.5 liters, 1.6 liters and 1.9 liters (refer to the OT, B5, B6 SOHC, BPE SOHC) have a cylinder head with the opposite location of the intake and exhaust manifolds with a single camshaft. A camshaft according to the model, actuates the rocker arm through two or four valves per combustion chamber (2 inlet and 2 exhaust valves). The camshaft is driven by a toothed belt. Cars with petrol engines of 1.6 and 1.9 liters (refer B6 DOHC, BP DOHC) also have a cylinder head with the opposite location of the inlet and outlet channels, but with two camshafts. They are driven via bucket tappets 4 valves per combustion chamber (2 inlet and 2 exhaust valves). The camshafts are driven by a toothed belt.

In engines with a cylinder head with an opposite arrangement of the inlet and outlet of fresh air-fuel mixture enters one side of the head, and the exhaust gases produced from the other. By this arrangement ensures a faster gas exchange and high power.

Engine lubrication oil pump is used, which is either located on the front side of the crankcase, or in the sump (engine E). He is driven directly from the crankshaft or via chain. Oil flows through the suction holes and channels to the bearings of the crankshaft and camshaft and to the cylinder bore.

Water pump on engines VZ, B5, B6, BP and PN is located at the end of the cylinder. On engines E water pump located on the cylinder block side. Pump drive for all engines is performed a V-belt which also drives a generator. One or two additional V-belts are used to drive the power steering and air conditioning. To prepare the working mixture according to the model are or carburetor or electronic fuel injection systems, which generally do not require maintenance.

Spark produced by maintenance-free electronic ignition system. Depending on the model may need to check and adjust the ignition timing under maintenance. The ignition distributor is located on the cylinder head and driven directly by the camshaft.

The radiator fan with the engine stopped and the ignition on may start spontaneously. Because of the heat in the engine compartment it may happen several times. When working in the engine compartment on the hot engine should always be mindful of the possible inclusion of the fan. Therefore, when working in the engine compartment should be possible on the ignition off.