MULTIFUEL INTERNAL COMBUSTION ENGINE AND COMBUSTION CONTROLLING METHOD THEREOF
First Claim
1. A multifuel internal combustion engine which is driven mainly at a theoretical air fuel ratio by introducing at least one of at least two kinds fuel having different properties into a combustion chamber or by introducing mixed fuel including the at least two kinds of fuel into the combustion chamber, the multifuel internal combustion engine comprising:
- fuel characteristics determining unit that determines ignitability and anti-knocking performance of the fuel introduced into the combustion chamber;
combustion mode setting unit that sets a compression hypergolic diffusion combustion mode when ignitability of the fuel introduced into the combustion chamber is excellent, sets a premixed spark-ignition flame propagation combustion mode when the ignitability of the fuel introduced into the combustion chamber is poor and anti-knocking performance is excellent, and sets a spark assist compression hypergolic diffusion combustion mode when both the ignitability and anti-knocking performance of the fuel introduced into the combustion chamber are poor; and
combustion control execution unit that makes the engine to drive in a combustion mode which is set by the combustion mode setting unit.
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Accused Products
Abstract
A multifuel internal combustion engine includes: fuel characteristics determining unit that determines ignitability and anti-knocking performance of the fuel introduced into the combustion chamber CC; combustion mode setting unit that sets a compression hypergolic diffusion combustion mode when ignitability of the fuel is excellent, sets a premixed spark-ignition flame propagation combustion mode when the ignitability of the fuel is poor and anti-knocking performance is excellent, and sets a spark assist compression hypergolic diffusion combustion mode when both the ignitability and anti-knocking performance of the fuel are poor; and combustion control execution unit that makes the engine to drive in a combustion mode which is set by the combustion mode setting unit.
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Citations
14 Claims
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1. A multifuel internal combustion engine which is driven mainly at a theoretical air fuel ratio by introducing at least one of at least two kinds fuel having different properties into a combustion chamber or by introducing mixed fuel including the at least two kinds of fuel into the combustion chamber, the multifuel internal combustion engine comprising:
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fuel characteristics determining unit that determines ignitability and anti-knocking performance of the fuel introduced into the combustion chamber; combustion mode setting unit that sets a compression hypergolic diffusion combustion mode when ignitability of the fuel introduced into the combustion chamber is excellent, sets a premixed spark-ignition flame propagation combustion mode when the ignitability of the fuel introduced into the combustion chamber is poor and anti-knocking performance is excellent, and sets a spark assist compression hypergolic diffusion combustion mode when both the ignitability and anti-knocking performance of the fuel introduced into the combustion chamber are poor; and combustion control execution unit that makes the engine to drive in a combustion mode which is set by the combustion mode setting unit. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A combustion controlling method of a multifuel internal combustion engine which is driven mainly at a theoretical air fuel ratio by introducing at least one of at least two kinds fuel having different properties into a combustion chamber or by introducing mixed fuel including the at least two kinds of fuel into the combustion chamber, the combustion controlling method comprising:
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determining fuel characteristics with respect to ignitability and anti-knocking performance of the fuel introduced into the combustion chamber; setting a compression hypergolic diffusion combustion mode when ignitability of the fuel introduced into the combustion chamber is excellent, setting a premixed spark-ignition flame propagation combustion mode when the ignitability of the fuel introduced into the combustion chamber is poor and anti-knocking performance is excellent, and setting a spark assist compression hypergolic diffusion combustion mode when both the ignitability and anti-knocking performance of the fuel introduced into the combustion chamber are poor; and executing combustion control to make the engine to drive in a combustion mode which is set in the combustion mode setting. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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Specification