0
What is the difference between 'Open Loop' and 'Closed Loop'? A: When the engine is first started, and rpm is above 400 rpm, the system goes into 'Open Loop' operation. In 'Open Loop', the ECM will ignore the signal from the Oxygen (O2) sensor and calculate the air/fuel ratio based on inputs from the coolant and MAF sensors, but mostly from a pre-programmed table in the memcal. The system will stay in 'Open Loop' until the following conditions are met: 1. The O2 sensor has varying voltage output, showing that it is hot enough to operate properly. (This depends on temperature)
2. The coolant sensor is above a specified temperature about 40oC/104oF.
3. A specific amount of time has elapsed after starting the engine. The specific values for the above conditions vary with different engines and are stored in the mem-cal. When these conditions are met, the system goes into 'Closed Loop' operation. In 'Closed Loop', the ECM will calculate the air/fuel ratio (injector on-time) based on the various sensors but mainly the O2 sensor. This allows the air/fuel ratio to stay very close to 14.7:1.
What else can I help you with?
What is the difference between a closed hydraulic system and an open hydraulic system?
A system which can exchange mass as well as matter with the surroundings is called anopen system.Example:- Heating of CaCo3 in an open bulb.A system which can exchange energy but not matter is called a closed system.Example:- Calcination of CaCo3 in a sealed bulb.
What is the difference between flow process and non flow process?
Flow process takes place in open system & non-flow process takes place in closed system.
What is the difference between a straight and an inlet?
an inlet has a closed end a straight is open both ends
What is the difference between a control valve and a gate valve in a stand pipe system?
a gate valve is a one way totally open or closed valve, a control valve is a variable valve.
What is the difference between an open and closed system in hydronic heating?
Closed system implies that the system is under some pressure and the fluid is not exposed to the ambient air. Home systems are usually set at 12psi. An open system is exposed to the air with a holding or storage tank at the highest point. An open system needs to be built with parts and materials that will not corode ie; copper, brass, pex pipe, etc. ( do not use cast iron pumps, steel tanks or fittings) lc
What is the difference between the momentum in an open system and a closed system?
In an open system, momentum can be exchanged with the surroundings, while in a closed system, momentum remains constant within the system and cannot be exchanged with the surroundings.
What is the Difference between open system and closed system?
they are different because one is open and the other is closed
What is the basic difference between a open class system and a closed class system?
The existence or nonexistence of social mobility
What is the basic difference between an open class system and a closed class system?
The existence or nonexistence of social mobility
What is the difference between an open and closed community?
one is open and the other is closed
What is the difference between an open system and a closed system in the context of physics?
In physics, an open system allows for the exchange of matter and energy with its surroundings, while a closed system does not allow for the exchange of matter but can exchange energy with its surroundings.
What is the main difference between the open and the closed crankcase ventilating system?
An open ventilation system simply lets the crankcase fumes vent into the atmosphere. A closed system reburns the crankcase fumes via the pcv valve.
What is the difference between a closed and open circulatory system?
We, as vertebrates, have a closed system in that our blood travels from the heart and back. Other organisms don't have such a system. Open circulatory systems allow all fluids in an organism to mix.
In physical science not biology what is the difference between a closed system and an open system?
A closed system does not allow for energy or matter to enter or leave the system.
What is a major difference between the circulatory of a grasshopper and that of an earthworm?
Grasshoppers have an open circulatory system, and worms have a closed circulatory system. There you go. :)
What is the difference between a closed hydraulic system and an open hydraulic system?
A system which can exchange mass as well as matter with the surroundings is called anopen system.Example:- Heating of CaCo3 in an open bulb.A system which can exchange energy but not matter is called a closed system.Example:- Calcination of CaCo3 in a sealed bulb.
What are the key differences between closed and open system physics?
In closed system physics, energy and matter do not enter or leave the system, while in open system physics, energy and matter can flow in and out of the system. This difference affects how the system interacts with its surroundings and how it behaves over time.
