How does Honda Odyssey cylinder deactivation work?

How Honda Odyssey Cylinder Deactivation Works
The Honda Odyssey’s cylinder deactivation, also known as Variable Cylinder Management (VCM), is a fuel-saving technology that automatically deactivates a portion of the engine’s cylinders based on driving conditions. Here’s how it works:
VCM Technology:
– VCM automatically deactivates 1/3 or 1/2 of the cylinders, depending on driving conditions, to save fuel and lower emissions.
Supported Models:
– The VCM technology is supported in various Honda models, including the 2005-2020 3.5L V6 I-VTEC, 2005-2010 Honda Odyssey, 2006-2008 Honda Pilot, and others.
Disabling VCM:
– There are discussions and products available for disabling VCM, with some users expressing concerns about potential issues related to VCM, such as piston ring problems.
Warranty and Modifications:
– It’s important to note that modifying the VCM system may have implications for the vehicle’s warranty, as warranty documents typically contain standard lines forbidding engine modifications.
In summary, Honda’s VCM technology is designed to optimize fuel efficiency by deactivating cylinders as needed, but there are discussions and products available for those who wish to disable this feature due to concerns about potential issues.
If you have any further questions or need more details, feel free to ask!

Does cylinder deactivation hurt the engine?

Let’s use a example of a V-8 engine that deactivate to 4-cylinders , even if the load is light, 4 cylinders are doing the work that 8 cylinders normally would do. My answer is yes, deactivation of cylinders do speed up engine wear in the active cylinders , but I think it’s still Beneficial to use.

Can Honda cylinder deactivation be turned off?

Usually 99% of cars with that variable valve timing / Active Fuel Management cylinder deactivation, they can’t be simply turned off, you most likely have to retune the ECM and BCM, and maybe even the PCM as well so it counters and relearns to run like a car without the VVT/AFM.

How does Honda Odyssey VCM work?

The VCM hydraulic circuit control is defaulted open, meaning that the engine has to build up enough oil pressure on initial startup to disable the rear bank of cylinders. A single solenoid on the rear camshaft is activated to close oil pressure to unlock the cam followers, thereby closing the valves.

What are the cons of cylinder deactivation?

If the engine is equipped with a cylinder deactivation system, we face a new potential failure mode. Increasing the valvespring pressure or just increasing the amount of lifter movement at speed may be enough to overwhelm the oil pressure keeping the lifter in full operation.

What is the problem with cylinder deactivation?

Cylinder deactivation issues often result from misfires, which can be caused by worn or fouled spark plugs. To address this, regularly replace spark plugs according to the manufacturer’s recommended intervals. Ensure you use the correct type and heat range of spark plugs for your specific engine.

Can you disable Honda VCM?

CURRENTLY SUPPORTED MODELS. Position 40,50,60 (Disable VCM) is tunable between different climates. Users who have had to replace CTS sensors will now have a very precise way of disabling VCM as well as calibrating the dash temperature gauge. For cold climates like Alaska, a setting of 35-40 will work in most cases.

What are the disadvantages of cylinder deactivation?

If the engine is equipped with a cylinder deactivation system, we face a new potential failure mode. Increasing the valvespring pressure or just increasing the amount of lifter movement at speed may be enough to overwhelm the oil pressure keeping the lifter in full operation.

Should I worry about cylinder deactivation?

When functioning correctly, cylinder deactivation should not cause long-term engine damage. However, problems left unaddressed, such as misfires or sensor issues, can potentially lead to engine damage over time.

Does cylinder deactivation work at idle?

Abstract: Cylinder deactivation (CDA) can be used to manage exhaust gas temperature in diesel engines. It allows to maintain the aftertreatment system temperature at idle and low load conditions without a fuel consumption penalty.

How does Honda cylinder deactivation work?

But once you reach a cruising speed and you don’t need all of this power. Then your BCM will kick in and it will shut. Down two of your cylinders. Now you’re just running on four. And it stops the