The foremost drawback for the utilization of methanol in diesel
engines is probably its low cetane number, which, depending on
the measurement method, typically ranges from 2 to 12 [2]. The
much high latent heat of vaporization also weakens its auto-ignition
ability [3]. In spite of these drawbacks, methanol has been
used in diesel engines primarily in one of the following ways:
blends, neat methanol and dual fuel. Recently, the team of Huang
investigated on the emissions and combustion characteristics of a
single-cylinder diesel engine running on a stabilized diesel–
methanol mixture with up to 18% by weight of methanol. And
smoke emission decreases with the increase of the oxygen mass
fraction in the blends without increasing the NOx emission [4,5].
However the blending of methanol with diesel fuel requires additives
for stabilizing the mixed fuel and there is a limitation on the
amount of methanol that can be premixed with diesel fuel for
stable operation [6]. Actually, the diesel–methanol blending has
been made possible only by the addition of surfactants in order
to form micro-emulsions, rather than real solutions [7]. Moreover,
the use of neat methanol in diesel engines usually requires the
addition of relatively large amount of expensive ignitionimproving
compounds and very high compression ratios [8].
The foremost drawback for the utilization of methanol in diesel
engines is probably its low cetane number, which, depending on
the measurement method, typically ranges from 2 to 12 [2]. The
much high latent heat of vaporization also weakens its auto-ignition
ability [3]. In spite of these drawbacks, methanol has been
used in diesel engines primarily in one of the following ways:
blends, neat methanol and dual fuel. Recently, the team of Huang
investigated on the emissions and combustion characteristics of a
single-cylinder diesel engine running on a stabilized diesel–
methanol mixture with up to 18% by weight of methanol. And
smoke emission decreases with the increase of the oxygen mass
fraction in the blends without increasing the NOx emission [4,5].
However the blending of methanol with diesel fuel requires additives
for stabilizing the mixed fuel and there is a limitation on the
amount of methanol that can be premixed with diesel fuel for
stable operation [6]. Actually, the diesel–methanol blending has
been made possible only by the addition of surfactants in order
to form micro-emulsions, rather than real solutions [7]. Moreover,
the use of neat methanol in diesel engines usually requires the
addition of relatively large amount of expensive ignitionimproving
compounds and very high compression ratios [8].
การแปล กรุณารอสักครู่..
The foremost drawback for the utilization of methanol in diesel
engines is probably its low cetane number, which, depending on
the measurement method, typically ranges from 2 to 12 [2]. The
much high latent heat of vaporization also weakens its auto-ignition
ability [3]. In spite of these drawbacks, methanol has been
used in diesel engines primarily in one of the following ways:
blends, neat methanol and dual fuel. Recently, the team of Huang
investigated on the emissions and combustion characteristics of a
single-cylinder diesel engine running on a stabilized diesel–
methanol mixture with up to 18% by weight of methanol. And
smoke emission decreases with the increase of the oxygen mass
fraction in the blends without increasing the NOx emission [4,5].
However the blending of methanol with diesel fuel requires additives
for stabilizing the mixed fuel and there is a limitation on the
amount of methanol that can be premixed with diesel fuel for
stable operation [6]. Actually, the diesel–methanol blending has
been made possible only by the addition of surfactants in order
to form micro-emulsions, rather than real solutions [7]. Moreover,
the use of neat methanol in diesel engines usually requires the
addition of relatively large amount of expensive ignitionimproving
compounds and very high compression ratios [8].
การแปล กรุณารอสักครู่..