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Glow plug is merely an aid for starting the engine. There are many designs still produced today without any glow plugs (eg military diesels run without any electricity), and even many modern diesel engine can be started if glow plugs fail (unless onboard computer prevents that). Diesel's auto-ignition comes from heat generated by adiabatic compression of ...


This phrase has been around very long and has been used in the aviation industry as well as automobile. This is a very good, and more importantly, very easy for anyone to understand way of describing the four cycles of the engine. Here is an excerpt from an Aviation safety report from 1958: Air Safety Forum: Reports Presented at the Annual Air Safety ...


When I was little, my dad had a yacht which had been a northern European coastguard patrol vessel. He bought it as surplus military and converted it into a yacht. The engine, a Stork Werkspoor diesel, well that was quite a story. It was massive, almost 6' tall, with a gigantic flywheel. Each cylinder had a shelf in the casting, on which you placed a blow ...


Here is some information from the Trucker Report. Gottlieb Daimler invented “vehicle no. 42” in 1896. Many truck enthusiasts cite “vehicle no. 42,” a horseless wagon, as the first truck. Daimler’s invention had a 4 horsepower, 1.1 liter, 2 cylinder engine that supposedly hauled 3,300 pounds. Skeptics believe that Daimler over-exaggerated the payload ...


I've not seen it done personally but I've been told that some old (WWII) military engines would be warmed up prior to starting in any number of ways which anecdotal included the use of lit marine flares. Apparently some Russian tanks with Diesel engines would be started by cranking them with Petrol engines or even warming them over a fire.


The origin of the word horsepower comes literally from the horse and buggy days. 1 horse pulling a load of 330 lbs of coal or whatever 100 feet above ground in 1 minute generated 1 horsepower. 1 Hp= 330lbs X 100 Ft / 1 minute 33,000 foot-pounds per minute. With the advent of electrical power the equivalent power was stated in watts or kilowatts. 1 Hp= ...


One method that is still used - but only on vehicles with metal air filter canisters is to remove the filter and put burning paper there - the hot air makes all the difference. Once running put the filter back in... Another method is to heat the air inlet pipe with a blowtorch again : metal not plastic... And yes I have seen both : heavy goods, ...


To expand on the answer above, many old vintage diesels ran a 'hot bulb' design. There would be a section of the head where an open flame would be used to heat it, so the engine could ignite the lower grade fuel oils/diesels without the need for extremely high compression.


If the compression ratio is high enough (around 22-1), there will be enough heat from the compression. Most diesel engines are turbo charged to increase power. The compression ratio is lower because the air is partly compressed by the turbine, but not while starting, so the glow plugs provide the extra heat needed.


I don't know what was used before glow plugs. But you can use a hair dryer to blow warm air into the air inlet of a diesel motor and it will make it start easily in cold weather. I've done this many times and it works like a charm.

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