Cross section of engine 21124 (1,6i 16V): 1 - drain plug of the oil pan; 2 - crankshaft; 3 - oil filter; 4 - exhaust manifold; 5 - coolant pump; 6 - piston; 7 - exhaust manifold gasket; 8 - oxygen concentration sensor; 9 - spark plug; 10 - exhaust valve; 11 - cylinder head; 12 - exhaust camshaft; 13 - camshaft bearing housing; 14 - cylinder head cover; 15 - inlet module; 16 - inlet valve; 17 - ignition coil; 18 - hydraulic pusher; 19 - intake camshaft; 20 - nozzle; 21 - fuel rail; 22 - diagnostic fitting of the fuel rail; 23 - cylinder head gasket; 24 - piston rings; 25 - piston pin; 26 - cylinder block; 27 - fitting of the crankcase ventilation system; 28 - connecting rod; 29 - connecting rod bearings; 30 - flywheel; 31 - gasket of the oil pan; 32 - oil intake; 33 - engine oil pan.
Note. On the engine 2112 (1,5i 16V) cylinder head has removable spark plug guide tubes, exhaust manifold without catalytic converter; instead of four ignition coils, an ignition module is installed; the intake pipeline consists of two separate elements - the receiver and the pipeline (see below for details).
The cylinder block is cast iron, with cylinders machined in it. The internal cavities of the block for the coolant are formed during its casting, and the oil supply channels are made by drilling. In the lower part of the block, five supports of the main bearings of the crankshaft are bored out. The main bearing caps are machined with their bearings and are therefore not interchangeable. In order not to confuse the covers during installation, they are marked with the bearing serial number, starting from the crankshaft pulley. In the cover of the second main bearing, two threaded holes are made for the oil intake mounting bolts. Steel-aluminum liners are installed in the supports and caps of the main bearings. On both sides of the third main bearing support, sockets are made for installing thrust half rings that prevent axial movement of the crankshaft. Front half ring - steel-aluminum (yellow on one side, steel color on the other), rear - ceramic-metal (yellow on both sides).
The pistons are cast from aluminum alloy with steel rings filled into them. In the bottom of each piston, grooves are made for the valve plates. Each piston has one oil scraper and two compression rings.
Fingers - floating type (fixed in the piston bores on both sides with snap rings). On part of the 2111 engines, a connecting rod and piston group of the 21083 engine can be installed, where the fingers are fixed in the upper heads of the connecting rods by the method "hot fit".
Connecting rods - steel, forged, with removable covers. The connecting rod caps are not interchangeable and only fit in one position to the connecting rods. The connecting rods and their caps are marked with the cylinder number.
From the bottom to the cylinder block, through the gasket, the oil pan is attached.
Combined engine lubrication system - under pressure and spray. The oil pump is an internal gear type driven by the front end of the crankshaft. Through the oil intake, the pump takes oil from the oil pan and pumps it under pressure into the channels of the engine lubrication system. To control the oil level in the sump, a dipstick and an electric oil level sensor are installed. The oil filter is full-flow, with a paper filter element and a check valve that prevents oil from flowing out of the lubrication system channels into the oil pan after the engine is stopped.
Cross section of engine 21114 (1,6i 8V): 1 - drain plug of the oil pan; 2 - engine oil pan; 3 - crankshaft; 4 - oil filter; 5 - exhaust manifold; 6 - coolant pump; 7 - piston; 8 - oxygen concentration sensor; 9 - gasket of the inlet pipeline and exhaust manifold; 10 - inlet pipeline; 11 - nozzle; 12 - diagnostic fitting of the fuel rail; 13 - receiver; 14 - bracket for fastening the tip of the cable sheath; 15 - cylinder head cover; 16 - camshaft bearing housing; 17 - camshaft; 18 - hose of the crankcase ventilation system; 19 - valve pusher; 20 - cylinder head; 21 - a bolt of fastening of a head to the block of cylinders; 22 - valve; 23 - candle; 24 - cylinder head gasket; 25 - top compression ring; 26 - lower compression ring; 27 - oil scraper ring; 28 - piston pin; 29 - fitting for installing an oil level indicator; 30 - connecting rod; 31 - flywheel; 32 - cylinder block; 33 - gasket of the oil pan; 34 - oil level indicator; 35 - oil intake
Channels are drilled in the body of the crankshaft. When the engine is running, oil under pressure from the block, through the holes and grooves in the main bearing shells and the holes in the main journals, enters the crankshaft channels and flows through them to the connecting rod journals, lubricating them. Technological openings of the channels are closed with stamped steel plugs.
The flywheel is bolted to the crankshaft flange. The crankshaft is balanced with the flywheel. To connect them in the required position, there is a mounting mark on the flywheel in the form of drilling, which should be opposite the connecting rod journal of the fourth cylinder.
On the left side of the block (when viewed from the side of the crankshaft pulley) a cavity is made for installing a coolant pump and a tide for installing an oil filter.
An aluminum head is installed on top of the cylinder block through a special gasket. It contains a gas distribution mechanism, closed on top with a lid with an oil filler neck. On some cars, a camshaft position sensor is installed in the cylinder head plug, and a pin is installed at the rear end of the shaft, designed to determine the shaft position sensor.
The drive of the gas distribution mechanism and the coolant pump is carried out by a toothed belt from a toothed pulley mounted on the engine crankshaft. The tension of the belt and the direction of its movement along the pulleys is carried out by a tension roller. The generator is driven by a V-ribbed belt from the engine crankshaft pulley.
Features of the engine device 2112 (1,5i 16V)
The engine is 16-valve, with a working volume of 1.5 liters, developed on the basis of the 2111 engine.
The cylinder block of the 2112 engine is the same as that of the 2111 engine, the cylinder head is the original with two camshafts. It consists of the block head itself, the bearing housing, four spark plug guide tubes and a cover.
To control the tension and condition of the belt, its front cover has a window closed with a removable plug.
Warning! A broken timing belt causes the piston to hit the valves. Therefore, it is necessary to regularly check the condition of the belt and replace it in a timely manner
The inlet pipeline and the receiver are made of aluminum alloy and are interconnected by means of rubber couplings. The ignition module is mounted on the cylinder head cover. The exhaust manifold is cast iron, its connection to the block head is sealed with a two-layer metal gasket.
Features of the engine device 21124 (1,6i 16V)
Engine 16-valve, 1.6 l, developed on the basis of the 2112 engine.
Engine 21124 has a cylinder block increased in height by 2.3 mm and an original crankshaft. Deeper grooves are made on the bottoms of the pistons, which slightly reduces the compression ratio, but eliminates the possibility of the piston hitting the valves. The cylinder head has been redesigned: the spark plug guide tubes are made directly in the cylinder head. The receiver and the inlet pipeline are one-piece, made of plastic as a single unit. The exhaust manifold is steel, combined with a catalytic converter. Its connection with the head is sealed with a two-layer metal gasket. The ignition module has been replaced by four ignition coils installed in the spark plug wells. The front timing belt cover is without an inspection window and is divided into two parts.
Features of the engine device 2111 (1,5i 8V)
Engine 8-valve, 1.5 liters with an overhead camshaft.
The block head contains a camshaft, eight valves with guide bushings and seats, and eight valve lifters with shims. Two camshaft bearing housings are bolted to the upper plane of the block head. The engine reservoir is made of aluminum, and the exhaust manifold is made of cast iron.
Features of the engine device 21114 (1,6i 8V)
The 21114 engine with a working volume of 1.6 liters, 8-valve, was created on the basis of the 2111 engine. It has a cylinder block increased in height by 2.3 mm and an original crankshaft. The cylinder diameter remains the same - 82 mm, the piston stroke is increased to 75.6 mm, in contrast to 71 mm for the base engine. Oil jets are installed in the main bearings. Oil from the nozzles is supplied to the internal surfaces of the pistons to cool them. Part of the oil enters the upper heads of the connecting rods and through the conical holes made in them enters the piston pins, lubricating them.
The engine receiver 21114 is made of plastic. The original fuel rail without a pressure regulator and nozzles are installed on the engine, different from those used on the 2111 engine. The exhaust manifold is steel, combined with a catalytic converter. Its connection to the cylinder head is sealed with a four-layer metal gasket.