Claims:We Claim:
1. A method of electronically controlling a valve of an engine cylinder, said method comprising:
detecting (100), by a control unit at least one working engine operating condition;

comparing (102), by said control unit said working engine operating condition with respect to a corresponding theoretical engine operating condition stored in a data map;

verifying (104), by said control unit, based on said comparison, if said working engine operating condition corresponds at least one of suction stroke and exhaust stroke; and

actuating (106), by said control unit, an actuator located on said inlet and exhaust port, by said control unit in dependence of said detected working engine operating condition.

2. The method of claim 1, wherein said actuator is an electro-magnetic actuator.
3. The method of claim 1, wherein said actuator is an electronic actuator.

4. The method of claim 1, wherein said working engine operating condition is at least one of speed and torque of the engine.
, Description:Complete Specification:

The following specification describes and ascertains the nature of this invention and the manner in which it is to be performed.
Field of the invention
[0001]This invention relates to the field of control mechanism for engine valves.

Background of the invention
[0002]An internal combustion engine is used for ensuring combustion of air and fuel mixture in order to generate power. The intake of fuel into the internal combustion engine is through an inlet port while the exhaust flows through an exhaust flow path. A valve is present at the inlet port and the exhaust flow path (outlet port), and is used for controlling the flow into and out of the cylinder. The valves at the inlet and outlet port are controlled with the help of mechanical poppet valves. The mechanical poppet valves are driven by a cam which derives power from the engine.

[0003]Prior art patent application US8215613 discloses an assembly for controlling the flow of a gas, the assembly comprises: a first casing having an entry opening through which to receive the gas to be controlled; a second casing having an exit conduit projecting outwardly therefrom, said exit conduit communicating with the entry opening of said first casing such that said exit conduit receives the gas that is received through the entry opening of said first casing; a third casing having an exit opening sized to receive the exit conduit of the second casing, an adjustable iris shutter system located between the first and second casings, the iris shutter system having a plurality of blades where each of said blades overlaps an adjacent blade so that the blades surround an orifice through the iris shutter system for the receipt of the gas to be controlled.

Brief description of the accompanying drawing
[0004] Different modes of the invention are disclosed in detail in the description and illustrated in the accompanying drawing:

[0005] FIG. 1 illustrates a method of controlling a valve of an engine cylinder.

Detailed description of the embodiments
[0006] FIG. 1 illustrates a method of controlling a valve of an engine cylinder. The method comprises, detecting 100, by a control unit at least one engine operating condition, the control unit compares 102 the working engine operating condition with respect to a corresponding theoretical engine operating condition stored in a data map. The control unit verifies 104 based on the comparison if the working engine operating condition corresponds at least one of suction stroke and exhaust stroke. The control unit actuates 104 an actuator located on the inlet and exhaust port, in dependence of the detected engine operating condition. In an embodiment the actuator may be an electro-magnetic or an electronic actuator. The electro-magnetic actuator may be in communication with a control valve. The control valve opens and/or closes the inlet port and exhaust port. The working engine operating condition is at least one of speed and torque of the engine.

[0007]The working of the above mentioned method will be explained in further detail. For the purpose of better understanding the working of the method will be explained considering two strokes for which the control valve needs to be opened and closed, that is one during the suction stroke and the exhaust stroke. At step 100 the control unit detects at least one working engine operating condition. The working engine operating condition may be speed of the engine. Taking speed as an input the control unit, at step 102, the control compares the working engine operating condition with respect to a corresponding theoretical engine operating condition stored in a data map. For an engine speed of X Rpm, the control unit compares this X Rpm with respect to the theoretical engine operating condition. The theoretical engine operating condition is derived during calibration. This comparison at step 102 is required in order to arrive at the time for which the control valve that is located at the inlet port should be kept open. At step 104, the control unit verifies based on the comparison if the working engine operating condition corresponds to suction stroke. The control unit actuates 106 an actuator located on the inlet port to keep the inlet path to the engine open. The actuator is in electronic communication with the control valve. The actuation of the actuator keeps the control valve open or in case it closed opens the control valve.

[0008]Now, consider that case of exhaust stroke in the engine. In the case of exhaust stroke, the exhaust port needs to be kept open. In order to achieve the same, at step 100, the control unit detects at least one working engine operating condition, the working operating condition disclosed here would correspond to exhaust stroke. This is arrived at by comparing 102 the working engine operating condition with respect to a corresponding theoretical engine operating condition stored in a data map, and verifying 104 based on the comparison if the working engine operating condition corresponds to exhaust stroke. The control unit actuates 106 an actuator located on the exhaust port, in dependence of the detected working engine operating condition. The actuation of the actuator opens a valve located on the outlet port for enabling exhaust stroke.

[0009] By using the above mentioned method it is now possible to replace the conventional poppet valves and replace the same with an electronically controlled valve. This helps in improving the timing of opening and closing of valves and hence engine timing.

[0010] ‘Adapted’ or ‘arranged’, in the context of the instant disclosure, refers to the technical capability or the technical capacity of a component, in relation to which the term ‘adapted’ or ‘arranged’ is used, to carry out or executed a specified action or actions, upon the requirement of the specified action or actions to be carried out or executed. Moreover, the usage of the term ‘adapted’ or ‘arranged’ here, is in reference with the normal technical capability or technical capacity of the component, imparted by the design or the structure or the composition of the component, and not in reference with any special or extraneous capability or capacity, beyond the scope of the normal technical capability or technical capacity. Therefore there is a need to address this problem.

[0011]It should be understood that embodiments explained in the description above are only illustrative and do not limit the scope of this invention in terms of the type and capacity of engine. Many such embodiments and other modifications and changes in the embodiment explained in the description are envisaged. The scope of the invention is only limited by the scope of the claims.