Intake and exhaust system of the engine 1MZ-FE Toyota Camry 2001 - 2006. General information

The use of ETCS-i (Intelligent Throttle Control System with Electric Actuator) has made it possible to provide improved accelerator control.

The use of ACIS (Acoustic Intake System Control) has improved engine performance. The use of an intake system control system has reduced noise and improved engine performance. A two-stage exhaust control system reduces noise and vibrations in the main muffler.

The EGR (Exhaust Gas Recirculation) system is used to reduce the concentration and control the formation of COH.

The amount of air entering the engine is determined by the throttle opening angle and the engine speed. The air flow passes through the air filter, the throttle body passage and enters the upper part of the intake manifold, from where it is distributed to the engine cylinders. When the coolant temperature is low, the idle speed control valve opens and air enters the top of the intake manifold through the bypass in addition to the air passing through the throttle.

When the engine warms up, even if the throttle valve is fully closed, air enters the upper part of the intake manifold, therefore, the idling speed (1st stage idle speed control) increases. The top of the intake manifold reduces airflow pulsations.

1MZ-FE engine intake and exhaust system:

1 - exhaust manifold;

2 - intake manifold;

3 - receiver;

4 - EGR valve;

5 - throttle branch pipe;

6 - main muffler;

7 - three-way catalytic converters.

Source: http://carmanz.com/toyota/camry-2001-2006/230662-tc2001402.html