Mazda 3 since 2003
	1. Operation and maintenance of the car
	2. Engine
		2.1. General description of new engines of the L8, LF and L3 models
			2.1.1. Mechanical part of engines
			2.1.2. Mechanism of change of phases of gas distribution
			2.1.3. Lubrication system
			2.1.4. Cooling system
			2.1.5. Fuel system
			2.1.6. System of production of the fulfilled gases and system of decrease in toxicity
				2.1.6.1. General information
				2.1.6.2. System of decrease in toxicity
				2.1.6.3. Camera of damping of pulsations
			2.1.7. Electric equipment of engines
		2.2. Mechanical part of engines
		2.3. Appendix 1
		2.4. Appendix 2
		2.5. Appendix 3
		2.6. The Z6 engine – a mechanical part
		2.7. Lubrication system
		2.8. Cooling system
		2.9. System of an admission
		2.10. Fuel system
		2.11. System of production of the fulfilled gases and system of decrease in toxicity
		2.12. System of ignition
		2.13. Control system
		2.14. Tables
	3. Transmission
	4. Running gear
	5. Steering mechanism
	6. Brake system
	7. Onboard electric equipment
	8. Body

2-1-6-1-obshhie-svedeniya.html

2.1.6.1. General information

The final collector settles down behind the engine.

Fig. 2.64. System of production of the fulfilled gases: 1 – main muffler; 2 – average pipe; 3 – three-component catalytic converter; 4 – final collector; 5 – H02S (forward part); 6 – HO2S (back part); 7 – L3 engine

This arrangement allows to use shorter exhaust pipes and to increase efficiency of release. Besides, thanks to the reduced distance to catalytic converter, temperature of the fulfilled gases falls slightly therefore the catalyst works more effectively. Cooling of the fulfilled gases is also prevented by application of two-layer pipes of a final collector (fig. 2.64).

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2.1.6. System of production of the fulfilled gases and system of decrease in toxicity

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2.1.6.2. System of decrease in toxicity