Gasoline engine device Mazda 6 (GG)

General description of L8, LF and L3 engines
The Mazda 6 is equipped with modern new generation engines with improved dynamic and maintainable characteristics. L8 engine - displacement 1.8 l, max. power - 88 kW...

Cylinder head cover
Pic. 2.3. Cylinder head cover: 1 - camshaft position sensor (CMP); 2 - mounting hole of the oil control valve (OCV) (L3 engine); 3 - oil filler cap The cylinder head...

Cylinder head
Pic. 2.4. Cylinder head: 1 – a bolt of fastening of a head of the cylinder; 2 - release side; 3 - inlet side; 4 - the front of the engine; 5 – angle between two valves;...

Cylinder head gasket
Pic. 2.5. Cylinder Head Gasket: 1 - plate; 2 - gasket The cylinder head gasket is metal and has a two-layer structure (pic. 2.5).

Cylinder block
The technological feature of the new cylinder block is that it is cast from an aluminum alloy with cast-iron cylinder liners installed inside the body. This improves...

Crankshaft and main bearing
Pic. 2.8. Crankshafts for L8, LF and L3 engines: 1 - drive gear The crankshafts of the L8 and LF models are cast iron 5-bearing with 4 counterweights. The crankshaft of...

Balancing block
Pic. 2.11. Balancing block: 1 - balancing block of cassette type; 2 - balancing shaft Removable cassette balance block used in L3 engines to reduce engine vibration...

The principle of operation of the balancing block
Pic. 2.12. The principle of operation of the balancing unit: 1 - adjusting gasket; 2 - crankshaft; 3 - the front of the engine; 4 - body of the balancing block; 5 -...

Vibration damper, crankshaft
Pic. 2.14. Crankshaft Vibration Damper: 1 - vertical projection; 2 - section; 3 - gear wheel of the crankshaft pulley; 4 - pulley mounting hole; 5 - torsional vibration...

Front engine cover
Pic. 2.15. Front engine cover: 1 - vertical projection; 2 - technological hole for fixing the tensioner lever; 3 - technological hole for unlocking the chain tensioner;...

Piston — design description
The pistons are made of heat-resistant and highly thermally conductive aluminum alloy, the piston skirt is coated with graphite to reduce friction. Pic. 2.16. Piston: 1...

Piston rings and piston pin
Pic. 2.17. Piston rings and piston pin: 1 - section of the upper ring; 2 – section of the second ring; 3 - cross section of the oil scraper ring; 4 - side rings; 5 -...

Connecting rod and connecting rod bearing
Pic. 2.18. Connecting rod and connecting rod bearing: 1 - expansion; 2 - connecting rod; 3 – parting surface; 4 - connecting rod cover; 5 - connecting rod bearing The...

Valve mechanism — general information
Pic. 2.20. The valve mechanism of Mazda 6 car engines: 1 - camshaft; 2 - timing chain drive; 3 – an asterisk of a camshaft; 4 - tensioner lever; 5 - chain tensioner; 6 -...

Camshaft
Detection unit or camshaft position sensor (CMP), which is integrated with the camshaft, is located in the intake camshaft on L8 and LF models. Detection block (trigger)...

Camshaft sprocket
Pic. 2.23. Camshaft sprocket: 1 - camshaft sprocket; 2 - actuator for changing the valve timing The design uses a high rigidity alloy alloy camshaft sprocket hardened to...

Crankshaft sprocket
Pic. 2.24. Crankshaft sprocket: 1 – an asterisk of a drive of the oil pump; 2 – an asterisk of a drive of the gas distribution mechanism; 3 - the front of the engine; 4...

Gas distribution mechanism drive chain
Pic. 2.25. Timing mechanism drive chain: 1 - camshaft sprocket; 2 - tensioner lever; 3 - chain tensioner; 4 - chain guide; 5 - crankshaft sprocket; 6 - timing chain...

Timing chain tensioner
Pic. 2.26. Timing chain tensioner: 1 – ratchet opening; 2 - oil supply hole; 3 - check valve; 4 - piston spring; 5 - piston; 6 - gear rack; 7 - ratchet; 8 - ratchet...

Valve, valve spring, slinger cap, valve guide
Pic. 2.27. Valve components: 1 - valve cracker; 2 - the upper plate of the valve spring; 3 - valve spring; 4 - oil deflector cap; 5 - valve guide sleeve; 6 - valve The...

Valve tappet
Pic. 2.28. The scheme of the valve mechanism: 1 - valve pusher; 2 - camshaft; 3 - section of the valve pusher; 4 - contact surface of the cam contour; 5 - contact...

The mechanism for changing the valve timing
Pic. 2.29. Diagram of the valve timing mechanism: 1 - torque; 2 – engine speed; 3 - low and medium speed engine; 4 - high-speed engine; 5 - engine with a mechanism for...

Variable valve timing system
The variable valve timing system continuously modifies the phases of the variable valve timing actuator and intake camshaft under the action of hydraulic pressure...

Scheme of the mechanism for changing the valve timing
Pic. 2.31. Structural diagram of the valve timing mechanism: 1 - crankshaft position sensor; 2 - camshaft position sensor; 3 - block PCM; 4 - oil control valve (OCV); 5...

The main characteristics of the mechanism for changing the valve timing
The actuator for changing the valve timing has two hydraulic compartments: a compartment for advancing the opening or closing of the valve and a compartment for delaying...

The design of the mechanism for changing the valve timing
Pic. 2.36. The design of the mechanism for changing the valve timing: 1 - camshaft sprocket; 2 - body; 3 - rotor; 4 - pin; 5 - seal; 6 - cover; 7 - groove The variable...

Oil Control Valve (OCV)
Pic. 2.37. Oil Control Valve Design (OCV): 1 - spool valve; 2 - spiral; 3 - plunger; 4 - return spring Oil control valve (OCV) consists of a spool valve that switches...

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Mazda6 GG (2002-2008)