Control device for engine
A control device, engine technology, applied in the direction of engine control, combustion engine, machine/engine, etc., can solve problems such as balance regardless of characteristics
Inactive Publication Date: 2009-12-16
TOYOTA JIDOSHA KK
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- Abstract
- Description
- Claims
- Application Information
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Problems solved by technology
[0004] However, in pulse supercharging, although a slight change in the opening timing of the intake control valve causes a large change in the amount of intake air, the balance of characteristics among cylinders in an engine having a plurality of cylinders has never been considered.
Method used
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Embodiment Construction
[0032] Embodiments in which the air intake control device of the present invention is applied to a direct injection gasoline engine will be described in detail below with reference to the drawings. However, it should be noted that the present invention is not limited to this embodiment, and all changes and corrections included in the concept of the present invention described in the claims are possible, and therefore, of course, can also be applied to the present invention. Mental other arbitrary technology.
[0033] exist figure 1 The concept of the engine system of the first embodiment is shown. The engine 10 of the present embodiment is a spark ignition type engine in which gasoline as fuel is directly injected from the fuel injection valve 11 into the combustion chamber 12 and ignited by the spark plug 13, and alcohol or LPG (liquefied natural gas) or the like may be used as fuel. Use as fuel. Furthermore, it may be an ignition-on-compression engine.
[0034] In the cy...
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A control device for an engine comprises an intake control valve disposed in an intake passage at an upstream side of an intake valve in each cylinder for individually opening / closing the intake passage, an actuator for opening / closing the intake control valve, and control means for controlling an operation of the actuator, wherein the control means controls the actuator to delay opening of the intake control valve in relation to opening of the intake valve, thus performing supercharge of the engine. The control device further comprises supercharge correction means for individually correcting operating timing of the actuator based on state value detected for each of the cylinders so that unbalance in a supercharge air quantity between the cylinders in the engine is suppressed, injection quantity correction means for correcting a fuel injection quantity of the engine, and correction instruction means for instructing execution of correction to the supercharge correction means and the injection quantity correction means, wherein the correction instruction means instructs to execute the injection quantity correction means with priority in a case where execution conditions of the supercharge correction means and the injection quantity correction means are both met.
Description
technical field [0001] The present invention relates to an engine having an intake control valve provided in an intake passage upstream of an intake valve to open and close the intake passage, and more particularly to an engine that takes into account the optimization of the operating state of the intake control valve technology. Background technique [0002] Attempts have been made to provide a highly responsive intake control valve on the upstream side of the intake valve in the intake passage of the internal combustion engine, thereby performing supercharging. In such an engine, the intake control valve is controlled to open later than the opening timing of the intake valve, and to close near the closing timing of the intake valve. As a result, in the combustor which is in a negative pressure state at the end of the intake stroke of the engine, the air in the intake passage on the upstream side of the intake control suddenly flows in, and a large amount of air can be pum...
Claims
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IPC IPC(8): F02B29/08F02D13/02F02B27/02F02D41/02F02D9/02
CPCF02D41/0007F02D13/02Y02T10/146F02B2075/125Y02T10/42Y02T10/18Y02T10/123F02D41/0085F02B29/083F02B23/104Y02T10/12Y02T10/40
Inventor 田畑正和金子智洋
Owner TOYOTA JIDOSHA KK