How are cylinders deactivated in a Mercedes Benz?

How are cylinders deactivated in a Mercedes Benz?

Some of the troublesome V8-6-4 engines were later converted into conventional V-8s. Full-size Mercedes-Benz models sold in Europe in 1999 had something new: an Active Cylinder Control system that deactivated half the cylinders in the V-8 or V-12 engine. Mercedes’ system used twin arms to actuate each valve, controlled by a computer.

What happens when you deactivate 3 cylinders in accord?

When idling those 3 cylinders, the system also alters ignition timing and turns the transmission’s torque converter lock-up on and off, to suppress jolting during the transition between 6- and 3-cylinder operation. Later, Accord and Pilot models could also get VCM.

When to use displacement on demand cylinder deactivation?

First installed on the 2005 Chevrolet TrailBlazer and GMC Envoy SUVs with a 5.3-liter V-8 engine, Displacement on Demand (DoD) could cut off half the cylinders when the vehicle was under light load conditions, and restore them when the driver pushed on the gas pedal to accelerate, or the need for additional power was detected.

How does Honda VCM V-6 cylinder deactivation work?

In Honda’s VCM V-6, the hydraulic circuit consists of two systems, each capable of providing the pressure needed to actuate the synchronizing piston that disables the unneeded valves. This is accomplished by separating the two tandem rocker arms that work with each valve, causing it to remain shut.

Some of the troublesome V8-6-4 engines were later converted into conventional V-8s. Full-size Mercedes-Benz models sold in Europe in 1999 had something new: an Active Cylinder Control system that deactivated half the cylinders in the V-8 or V-12 engine. Mercedes’ system used twin arms to actuate each valve, controlled by a computer.

When idling those 3 cylinders, the system also alters ignition timing and turns the transmission’s torque converter lock-up on and off, to suppress jolting during the transition between 6- and 3-cylinder operation. Later, Accord and Pilot models could also get VCM.

First installed on the 2005 Chevrolet TrailBlazer and GMC Envoy SUVs with a 5.3-liter V-8 engine, Displacement on Demand (DoD) could cut off half the cylinders when the vehicle was under light load conditions, and restore them when the driver pushed on the gas pedal to accelerate, or the need for additional power was detected.

In Honda’s VCM V-6, the hydraulic circuit consists of two systems, each capable of providing the pressure needed to actuate the synchronizing piston that disables the unneeded valves. This is accomplished by separating the two tandem rocker arms that work with each valve, causing it to remain shut.