今回は環境に優しく、燃料費も安い天然ガスについてです。
天然ガスといっても複数の形式がありますが、どれもエンジン本体は従来のまま利用できます。
各国の状況やメリット、デメリットを見ていきます。


参照
https://www.youtube.com/watch?v=6GwITWfX6V4&list=WL&index=8
https://www.youtube.com/watch?v=TdcPEk3ldzc
https://www.youtube.com/watch?v=O0yM5RlD7Zo
https://www.youtube.com/watch?v=11cgTziUizU&t=70s
https://www.youtube.com/watch?v=EuV3ry8FzR4
https://www.youtube.com/watch?v=M56z7mlJOzA
https://www.youtube.com/watch?v=TVRIBniZAg4&list=WL&index=5
https://www.youtube.com/watch?v=8YHsxXEVB1M
https://www.youtube.com/watch?v=-njmj0diWu8
https://www.youtube.com/watch?v=zaXBVYr9Ij0&t=43s
https://www.youtube.com/watch?v=UyPW9vaG34o
https://www.youtube.com/watch?v=y53_22QdHp8
https://www.youtube.com/watch?v=XlOeuRmxdSo
https://www.youtube.com/watch?v=OHnn11qpAW4
https://www.youtube.com/watch?v=Tudal_4x4F0
https://www.youtube.com/watch?v=XvFfyTtvE7Y
https://www.youtube.com/watch?v=it7rq12fGMA
https://www.youtube.com/watch?v=oa-Qu5W5DG8
https://www.youtube.com/watch?v=xvndHxN-apI
https://www.youtube.com/watch?v=CcayDbdVXHE&t=200s
https://www.youtube.com/watch?v=bEXlSoZPjjQ
https://www.youtube.com/watch?v=6WbcgMWr3JQ
https://www.youtube.com/watch?v=kAjQIbG330M&t=3s
https://www.youtube.com/watch?v=FJGeH3ZY6OA
https://www.youtube.com/watch?v=oRbrfzPluTE
https://www.youtube.com/watch?v=UWWaMmQd7ZQ
https://www.youtube.com/watch?v=W8FkcG64Gtk
https://www.youtube.com/watch?v=nx0yYZsjYks
https://www.youtube.com/watch?v=UWWaMmQd7ZQ&t=73s
https://www.youtube.com/watch?v=1n582aqoFkY
https://www.youtube.com/watch?v=S1YPeguw3NY
https://www.youtube.com/watch?v=0ACeuWEYyEs
https://www.youtube.com/watch?v=rKofXBXrRIU
https://www.youtube.com/watch?v=unLe6Ierl58
https://www.youtube.com/watch?v=e4lowlHq0do
https://www.youtube.com/watch?v=aenNUPnCC98
https://www.youtube.com/watch?v=yR9XS9QxRTk&list=WL&index=5&t=65s
https://www.youtube.com/watch?v=24UDvWnjTfU&list=WL&index=42
https://www.youtube.com/watch?v=6SSLYdQ6ZE8&list=WL&index=34
https://www.youtube.com/watch?v=R_ojuJsVwEI&list=WL&index=13
https://www.youtube.com/watch?v=i2whrGJ_TeY
https://www.youtube.com/watch?v=6TW3gWQuTZc
https://www.youtube.com/watch?v=yLmWzCV6CI8
https://www.youtube.com/watch?v=M0pn4h63OQ8
https://www.youtube.com/watch?v=HNFeUlnBypk&t=21s
https://www.youtube.com/watch?v=6GwITWfX6V4&list=WL&index=17
https://www.youtube.com/watch?v=xvndHxN-apI&list=WL&index=52
https://www.youtube.com/watch?v=UwP1wLuVqvU&t=173s
https://www.youtube.com/watch?v=AJsYX7fzUi4
https://www.youtube.com/watch?v=A89UPY6Q6vQ&list=WL&index=8
https://www.youtube.com/watch?v=iomL-3E2wE0
https://www.youtube.com/watch?v=rjlRTFyennU&list=WL&index=55
https://www.youtube.com/watch?v=8SeNhG_QGSY
https://www.youtube.com/watch?v=FMinageDfsA&t=217s
https://www.youtube.com/watch?v=LCRAX3Q4alQ&list=RDCMUCqK0MY3NfXX5fth6A9GCcyA&index=16
https://www.youtube.com/watch?v=UFjLnXo7oFI
https://www.youtube.com/watch?v=F6wOZgPKamc
https://www.youtube.com/watch?v=08Y_dTXYQXE&list=WL&index=23
https://www.youtube.com/watch?v=wLloSy-OWZ4&list=WL&index=24
https://www.youtube.com/watch?v=XlOeuRmxdSo&t=3s
https://www.youtube.com/watch?v=KAMaQkrPD64
https://www.youtube.com/watch?v=puWIOnCTuSg