How much to you know about engine technology

dshelley wrote:
I missed the first question, got mad and quit. Grade is F.

Same here, After the first question I figured I probably knew more about internal combustion engines than they do, as they don't seem to know what makes an engine internal combustion.

I missed the first question, got mad and quit. Grade is F.

I think I got 25 out of 30 but I was guessing on practically every date and who was first question....and got pretty lucky with my guesses. I answered the question which read something like "what do modern engines use for cooling" wrong. The answers included both liquid and air.....I thought "well air cooled engines use air and liquid cooled engines use air as well so air is a better answer than liquid" but I guess that wasn't the right kind of logic. And the spark plug fires on the compression stroke.

The spark BEGINS the combustion stroke, whenever it occurs.

I did one awhile ago that erroneously believed the car runs on the alternator.

I E-mailed them and said go to your car and turn the key to run without starting the engine. Everything works without the alternator even moving.

When did steam engines all of a sudden become internal combustion engines?

travelnutz wrote:
Timing advances to before TDC as the RPM's increase. However, as far as technical/technology being the question, for the engine to even start to run, the actual spark must occur after TDC and into the combustion stroke or the engine would run backward. Pre-ignition would occur! Think about it!

Very common with a 1970's 80's Detroit diesels in OTR tractors. I ran one backwards once in San Francisco after a picking up a load of Best Foods Mayonnaise. Heavy load.... HUGE hill.... Wrong gear :E

LOL
You guys are good, but I bet our friend down in Texas got like 32 out of 30 correct :B
Only 26 for me.... clearly the quiz's fault :W

29 of 30... was thrown by the question - who made/invented four wheel drive... none of the answers are correct.

Timing advances to before TDC as the RPM's increase. However, as far as technical/technology being the question, for the engine to even start to run, the actual spark must occur after TDC and into the combustion stroke or the engine would run backward. Pre-ignition would occur! Think about it!

OH48Lt wrote:
The answers to questions 7 and 13 are wrong.

Spark plugs fire on the compression stroke, several degrees BTDC, just before the power stroke begins at TDC.

Pistons are connected to connecting rods, not the crankshaft.

Got 28 of 30.

Some engine timing is set for 0 degrees tdc, but you're right, technically they normally fire during the compression stroke.

Given the other answers, crankshaft is the most correct answer. :)