1MZ-FE 3.0l v6 engine

Different types of mass air flow sensor?

Types of sensor

Hot wire sensor

Coldwire sensor

Its job

The air mass info is necessary for the ECU to balance and deliver the correct fuel mass to the engine

The Fuel System/ fuel injection

the system on this engine is a multipoint injection the system is from Toyota

This is the fuel rail and the fuel is stored at a presser of 41psi and will adjust to different loads on the engine. When its time for the injector to spray fuel into the cylinder.

these or the injectors for this engine they are controld by the ecu that is set at predetermine points to inject fuel in to the cylinders for the

the fuel filter is there to stop any rubbish from the bottom of the fuel tank and stop the injectors from getting blocked.

Control of variable valve timing

Some engines have Variable Valve Timing. In such an engine, the ECU controls the time in the engine cycle at which the valves open. The valves are usually opened sooner at higher speed than at lower speed. This can optimize the flow of air into the cylinder, increasing power and the economy.

volumetric efficiency

Engine Management System

Engine Management System works in a can network the ECU being the master and have components which work as slaves

• the components in the engine management
• Intake Air Temperature Sensors- to allow the engines ECU to calculate the density of the air
• Coolant Temperature Sensors-measure the temperature of the engine coolant of an internal combustion engine. The readings from this sensor are then fed back to the Engine control unit (ECU). This data from the sensor is then used to adjust the fuel injection and ignition timing.
• MAP Sensors / Boost Sensors-The data is used to calculate air density and determine the engine's air mass flow rate, which in turn determines the required fuel metering for optimum combustion
• Throttle Position Sensors -used to monitor the position of the throttle. The sensor is usually located on the butterfly spindle/shaft so that it can directly monitor the position of the throttle

Crankshaft and Camshaft sensors

thank you =0

What is the 4 stroke cycle

1MZ-FE 3.0l v6 engine

This engine was used on these car:

1999–2003 Lexus RX 300

2000–2003 Lexus ES 300

2000–2004 Toyota Avalon

2002–2003 Toyota Highlander

2001–2003 Toyota Sienna

2002– Toyota Alphard

2003–2006 Toyota Camry (V6)

1. Induction

Is where a mixture of fuel and air is forced in to the cylinder liner through the inlet valve

2. Compression

Both intake and outlet valves are closed and the air and fuel mixture is compressed by the piston

3. Ignition(power)

At the right time before top dead centre the air and fuel mixture get ignited by the spark plug which burns the mixture and makes a powerful expansion which pushes the piston down

4. Exhaust

When the piston Is coming back up it pushes exhaust gases out through open outlet valve