Diesel engine does not have an ignition coil mechanism. Diesel engine is also known as compression ignition engine. The heat of compression is used to burn fuel that has been injected into the combustion chamber.
Contrary to popular belief, lemon is not a hazard for an inflamed larynx. Lemon is known to help reverse voice loss. If you are suffering from a sudden loss of voice; all that you would need to do is to mix a few drops of lemon juice and honey in a glass of lukewarm water. Alternatively, one could even dissolve a few drops of lemon juice in a glass of warm water and add a pinch of salt.
Foods and drinks that help the voice only do so after your body processes them and sends their goodness to your throat via your blood stream. Ginger tea has no caffeine, and with a few drops of honey, it is a delicious and invigorating way to hydrate your body, which keeps your vocal folds in top form.