What is the variable valve actuator in a cat engine?
What is the variable valve actuator in a cat engine?
C15 and C18 – Variable Valve Actuator 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:
What is the cost of a caterpillar ACERT engine?
ACERT is Caterpillar’s acronym for Advanced Combustion Emissions Reduction Technology—an impressive-sounding name with a price tag estimated at well over $500 million. “It has been the most expensive, largest development program Cat has undertaken,” says Jim Parker, vice president of Cat’s engine marketing division.
How did ACERT invent variable intake valve actuation?
Probably the boldest ACERT innovation is variable intake-valve actuation, and its electronic controls. Cat employs a solenoid adapted from HEUI which allows the on-board computer to work with the camshaft. Refinements to MEUI enable it to inject varying amounts of fuel several times during each compression stroke.
How to adjust the ACERT valve on a C-15 ACERT?
If both rockers on #1 are loose, then you have the engine pinned at #1 Top Dead Center. If they are tight, and both rocker arms on #6 are loose, then you are #6 TDC. Then adjust the Jakes over 1, 3 & 5. Rotate the engine one full turn & pin the flywheel again.
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 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).
What are the valve actuators on a C-15 ACERT?
Adjust the intakes to .015, the exhaust to .030 then adjust the 3 intake valve actuators to .020, and the 3 jakes to .027. The real trick is, when you adjust the actuators & jakes, is to snug it down against the feeler gauge & wait a minute for the oil trapped inside the piston to “seep” out.
Where are the actuators located on a cat engine?
Actuator (54) – The actuators are located under the valve covers. 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.
