Method of mixing fuel oils
AssigneeKabushiki Kaisha Kokusai Technicals
InventorShozaburo Kobayashi
Life of this patent
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Abstract
A method of automatically mixing and controlling two fuel oils A and B substantially different in temperature prior to mixing in a desired ratio and a method of automatically mixing and controlling a mixture ratio of the two oils A and B at a specified temperature gradient in time of mixing. The methods make it possible to reduce cost of the devices concerned, protect engines against thermal shock, and automatize mixing and mutual changeover of the two oils A and B.
Claims7
A method of automatically mixing and controlling two fuel oils in a desired ratio, said oils being substantially different in oil temperature prior to mixing, said method comprising:
- calculating T.sub.M which satisfies the following equation (1) ##EQU18## wherein T.sub.A and T.sub.B represent the measured temperatures of fuel oils A and B, respectively;
- M.sub.A and M.sub.B represent desired mixture ratios (percentage) between the two oils which are set points for control of the two oils A and B;
- and T.sub.M represents a theoretical oil temperature of the mixed oil at a mixture ratio of M.sub.A :M.sub.B,
- and adapting the result of the calculation for use as reference input to thereby achieve automatic mixing and control of the fuel oils A and B in the desired ratios of M.sub.A and M.sub.B which are set points for control of the oils under feeding back the measured temperature T.sub.M ' of the mixed oil as compensation input.
A method of automatically mixing and controlling fuel oils in a desired temperature gradient so as to be in a desired ratio, said oils being substantially different in oil temperature prior to mixing, the method comprising:
- calculating T.sub.M which satisfies the following equation (1) ##EQU19## wherein T.sub.A and T.sub.B represent the measured temperatures of fuel oils A and B, respectively;
- M.sub.A and M.sub.B represent desired mixture ratios (percentage) between the two oils which are set points for control of the two oils A and B;
- and T.sub.M represents a theoretical oil temperature of the mixed oil at a mixture ratio of M.sub.A :M.sub.B,
- calculating
- .DELTA.t which satisfies the following equation (3) ##EQU20## wherein .DELTA.t represents the time from initiation of mixing till completion of the desired mixture ratios and a represents the desired temperature gradient,
- and adapting the result of the calculation for use as reference input to thereby achieve automatic mixing and control of the fuel oils A and B in the desired ratios of M.sub.A and M.sub.B which are set points for control of the oils under feeding back the measured temperature T.sub.M ' of the mixed oil as compensation input.
Dependencies are inferred from the claim text.