英文（工学系）添削願います．

質問

現在，NOx低減を目的として，圧縮着火機関の圧縮比を低減する研究が行われている．(1)しかし，圧縮比を低減すると，低温時において機関始動時の着火特性が悪化する．また，軽油代替燃料であるFAME(Fatty Acid Methyl Ester)には，高沸点成分が含まれるため冷間始動特性が劣る．そこで本研究では，空冷4サイクル単気筒直噴式ディーゼル機関を水噴射を用いて強制的に冷却することで，冷寒時の着火特性及び機関特性を実験的に明らかにすることを目的とした．なお，供試燃料として，軽油，ココナッツオイルメチルエステル(以下，CME)及び大豆油メチルエステル(以下，SME)を用いた

The research that decreases the compression ratio of the compression ignition engine is done so that NOx may decrease now
However, the ignition characteristic when the organization starts at the low temperature.deteriorates when the compression ratio is decreased.
Moreover, because the high boiling point element is included in FAME(Fatty Acid Methyl Ester) that is the diesel fuel substitution fuel, the cold start characteristic is inferior..The purpose of this study is to clarify the ignition characteristics and engine performance on 4-stroke air cooled diesel engine in the cold condition.
Diesel fuel, a coconut oil methylic ester (hereafter, CME), and a soybean oil methylic ester (hereafter, SME) were used as a supply fuel.

お願いします．

回答No.1

ymin1622 · ベストアンサー

参考にしてください。専門用語は自信ありません。

Today, research is being conducted to decrease the compression ratio of a compression ignition engine with an am to decrease NOx. However, one problem here is that a decrease in the compression ratio deteriorates the ignition characteristic when the engine is started at a low temperature. Another problem is that the cold start characteristic of FAME(Fatty Acid Methyl Ester) is poor because FAME, used as an alternative of diesel fuel, includes high boiling-point components. In view of the foregoing, the purpose of this study is to clarify the ignition characteristic and engine performance in the cold condition by forcing a 4-stroke air cooled diesel engine to cool by water injection. Diesel fuel, coconut oil methylic ester (hereafter, CME), and soybean oil methylic ester (hereafter, SME) were used as a supply fuel.

回答No.2

drmuraberg

できるだけ日本語の意に沿って訳して見ました。
用語は一応チェックして有りますが、冠詞の有無と単数複数の区別はチェックして下さい。

In order to decrease NOx emission from a compression ignition engine,
research efforts towards the decrease of compression ratio of engine are widely made today.

The decrease of compression ratio, however, leads to deterioration of the ignition characteristics of engine in low temperature start.

Moreover, FAME(Fatty Acid Methyl Esters), diesel fuel alternatives, contain
high boiling point substances and thus show inferior cold start characteristics.

The purpose of this study is to clarify experimentally the ignition characteristics and engine performance of a 4-stroke air-cooled diesel engine
in cold start. In the experiments the engine was cooled directly by spraying water mist to the engine (と思いますが、直訳ならば、by injecting water into the engine).

As sample fuels, diesel fuel, a coconut oil methyl ester (CME), and a soybean
oil methyl ester (SME) were used.