Internal combustion engine and a method for such an engine
AssigneeFord Global Technologies, LLC
InventorsKjell Möller, Daniel Gustavsson, Martin Andreasson
Life of this patent
Estimating the term…
Abstract
A method for controlling a diesel engine in a vehicle is presented. The engine comprises at least one cylinder, a fuel injector for each cylinder for injecting fuel into the respective cylinder, and a throttle valve for controlling the flow of air into the cylinder. The throttle valve is adjusted to assume a not fully open position if an amount of fuel injected into the at least one cylinder is equal to or less than a fuel injection threshold value.
Claims20
A method for controlling a diesel engine having an exhaust manifold in a vehicle, the engine having at least one cylinder, a fuel injector for each cylinder, and a throttle valve for controlling the flow of air into the engine, the method comprising:
- during a motor braking condition, adjusting the throttle valve to assume a not fully open position if an amount of fuel injected into the engine cylinder is equal to or less than a fuel injection threshold value, where the throttle valve is further adjusted to decrease a flow of relatively cold air through the engine, and through the exhaust manifold, if exhaust manifold temperature is above a predetermined temperature threshold.
An automotive control system, comprising:
- a transmission coupled to the diesel engine, the transmission having a clutch:
- a diesel engine, comprising:
- at least one cylinder;
- a throttle valve for controlling the flow of air into the engine;
- a fuel injector for each cylinder;
- and
- an engine controller, during a motor brake condition adjusting said throttle valve to a not fully open position if an amount of fuel injected into the at least one cylinder is equal to or less than a fuel injection threshold value and based on whether the clutch is engaged.
A method for controlling a diesel engine having an exhaust manifold in a vehicle, the engine having at least one cylinder, a fuel injector for each cylinder, and a throttle valve for controlling the flow of air into the engine, the method comprising:
- When exhaust manifold temperature is above a predetermined temperature, adjusting the throttle valve to assume a not fully open position to decrease a flow of relatively cold air through the engine, and through the exhaust manifold, if an amount of fuel injected into the engine cylinder is equal to or less than a fuel injection threshold value;
- and
- Avoiding such adjustment immediately after a cold start.
Dependencies are inferred from the claim text.