摘要:
A method of operating a combustion apparatus (10) having an engine (12) and an air processing unit (14) comprises: separating inlet air in the air processing unit (14) into oxygen enriched air and nitrogen enriched air; delivering oxygen enriched air to the engine (12) and initiating homogeneous charge compression ignition combustion, and then reducing the mass of oxygen enriched air being delivered to the engine (12) and maintaining homogeneous charge compression ignition combustion.
摘要:
An object of the present invention is to provide an abnormality detection device that is used with an internal combustion engine having a valve drive mechanism capable of halting the drive of at least one of an intake valve and an exhaust valve, and able to detect the abnormalities of a valve drive halt function. The internal combustion engine includes a knock sensor capable of sensing the seating sound of the intake valve and/or the exhaust valve. An ECU detects whether a control signal given to the valve drive mechanism is a valve drive signal or a valve halt signal. In accordance with the result of detection by the ECU and the presence of the seating sound in an output of the knock sensor, the abnormality detection device judges whether or not the valve drive mechanism is abnormal.
摘要:
A method for starting an engine includes reciprocating a piston in a cylinder through a plurality of reciprocating movements between the TDC and the BDC positions with the exhaust valve closed for longer than during the normal combustion cycle and the intake valve open for at least part of at least one of a compression movement and an exhaust movement while the exhaust valve is closed. An engine is also disclosed.
摘要:
A system and method to control engine valve timing to during the start of an internal combustion engine. Electromechanical valves are controlled in a manner to reduce hydrocarbon emissions during the start of an internal combustion engine. The method controls intake valves so that smaller adjustments are made to cylinder spark advance and air-fuel over a range of operating conditions.
摘要:
An engine intake air quantity control apparatus is provided with a throttle valve, a supercharger, a variable intake valve operating device and an intake air control device. The throttle valve varies an intake air flow passage area of an intake passage. The supercharger supercharges intake air. The variable intake valve operating device changes an intake valve timing of an intake valve in accordance with an engine operating state. The intake air control device increases an opening degree of the throttle valve in accordance with a detected increase of an accelerator pedal depression amount, and increases an intake air quantity by starting to supercharge the intake air with the supercharger upon a prescribed throttle valve opening degree having been reached. The intake air control device changes the prescribed throttle valve opening degree in accordance with the intake valve timing of the intake valve.
摘要:
An ECU controls an adjusting mechanism adjusting an output of an engine, such as a throttle valve, a swirl control valve, an ignition plug, an intake valve, and an ACIS (Acoustic Control Induction System) changing the length of an intake manifold, in accordance with a ratio between a maximum value KL(MAX) of load factor and the load factor required of the engine by the driver and by the system mounted on the vehicle at current engine speed NE.
摘要:
In this apparatus, maintaining control (time t1 to t2) which instructs fixing of the open timing VVT of an intake valve is executed in a predetermined low load state. Subsequently, there are executed changing control which instructs changing of the open timing VVT by a predetermined amount (time t2), and maintaining control which again instructs fixing of the open timing VVT of the intake valve (time t2 to t3). An intake-valve control apparatus is determined to be "anomalous" when an change amount Δave (= ave2 - ave1) between the average ave1 of a large number of sample values of ΔMFBβ (combustion percentage increase amount within a predetermined crank angle range in an expansion stroke) during the maintaining control before execution of the changing control and the average ave2 of a large number of sample values of ΔMFBβ during the maintaining control after execution of the changing control is less than a predetermined value C.
摘要:
In an engine 5 including an in-cylinder injector (50), the valve timing of an intake valve (80) is retarded by VVT (Variable Valve Timing) controlled by an engine ECU (300) to decompress in a combustion chamber (30) at engine startup. In accordance with a configuration in which the valve timing of intake valve (80) is advanced in a stepped manner from an initial set value, fuel injection from in-cylinder injector (50) is inhibited during the time when the advance is equal to or below a predetermined standard value, and fuel injection from in-cylinder injector (50) is allowed when exceeding the predetermined standard value, whereby degradation in the exhaust emission level in accordance with start time decompression control can be suppressed.
摘要:
The present invention relates to an internal combustion engine that can be operated in a homogenous charge combustion mode as well as a method and a computer readable storage device for controlling such an engine. The engine comprises at least one fuel injector through which fuel is introduced into the combustion chamber for the first cylinder, a fuel injection controller 4 that at least controls the fuel amount injected into the first cylinder and a piston in the first cylinder whose compression causes an air and fuel mixture to be ignited. The engine further comprises at least one inlet valve admitting air into the first cylinder, at least one exhaust valve for exhausting combusted gases from the first cylinder and at least one sensor for measuring an engine operation parameter in the first cylinder. A valve operation controller 12 is adapted to close the exhaust valve or valves before top dead centre during the exhaust stroke of the piston in the first cylinder and open the intake valve or valves between the top dead centre of the exhaust stroke and the top dead centre of the compression stroke in the first cylinder. The fuel injection controller 4 is adapted to control at least the fuel injection amount so as to perform at least one first fuel injection in the first cylinder before top dead centre of the piston exhaust stroke in the first cylinder and at least one second fuel injection in the first cylinder between the top dead centre of the exhaust stroke and the top dead centre of the compression stroke in the first cylinder. In order to solve the above mentioned problems, the engine is particularly characterized in that the valve operation controller 12 is adapted to determine the opening IVO/EVO and closing IVC/EVC of the valves of the first cylinder on the basis of the first injection or injections PFO.