What is the intake valve actuator on ACERT cat?

What is the intake valve actuator on ACERT cat?

An Intake Valve Actuator or IVA (also known as a Varible Valve Actuator or VVA) is a device that contacts the intake rocker arm and holds the intake valve of an ACERT Cat engine open in an effort to lower the cylinder temperatures of the engine.

How does the C 13 intake valve actuator work?

Pressurized engine oil flows from the rail to each actuator. The actuators use the pressurized engine oil and electrical commands from the ECM in order to delay the closing of the intake valves. The ECM commands the control valve to open for 17 seconds. The ECM checks the temperature of the coolant.

When to open and close intake valve actuator?

The ECM compares the two pressure values. The ECM activates a 283-7 code if the pressure difference is too low. The control valve should remain closed during engine operation. The system does not operate until the engine has reached normal operating temperature. Each actuator (4) contains two solenoids (6) .

What is code for C 13 intake valve solenoid?

Got a 2006 Int. with a C 13. 6 months ago had a code for #5 actuator solenoid. Replaced jake/intake actuator assembly and had no other problems. Last week light came on and had a code for #2 this time.

What’s the actuator valve on a C15 do?

Under normal driving conditions the motor works in an efficiency mode with 1500 ft/lb trq. Then when needed the cam timing changes and the trq is increased to 1850 trq. Thats why the valves sound noisier at times and quiet (er) other times.

Where are the actuators located on a cat engine?

The ECM sends a signal to the coil in order to fully open the spool. The oil is released into the space underneath the valve cover and the rail pressure is reduced. Actuator (54) – The actuators are located under the valve covers. Pressurized engine oil flows from the rail to each actuator.

How does the intake valve actuation system work?

The Intake Valve Actuation system (IVA) uses pressurized engine oil to delay the closing of the intake valves. The system is controlled by the Engine Control Module (ECM). The system contains the following components: Check Valve (53) – Pressurized engine oil flows to a rail inside the valve cover base.

What’s the Infamous Infamous actuator valve on C15?

They open the intake on the exhaust stroke to let exhaust back into the engine. The main big problem with the actuators is they break studs. Then they bang on the top of the head and scar it. In worst cases they can ruin the head. But you will be able to hear it first usually. It will run rough and miss.