Engine Clarifications
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I guess my knowledge in engines is really limited but I want to know what are the different kinds of engines out there. So far, I've heard these engines from the forums and magazines..
DOHC
DOHC VTEC (what does VTEC means?)
SOHC
TOHC
I guess there should be many more engines but these are the engines I feel like knowing more about. Would really appreciate some engine experts here to elaborate more
Also, I've heard things like 4 cylinders and 6 cylinders. What are those?
Any feedback helps
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Engine types>Inline,Flat,Rotary,Boxer,VeeOriginally posted by seizure_00:I guess my knowledge in engines is really limited but I want to know what are the different kinds of engines out there. So far, I've heard these engines from the forums and magazines..
DOHC
DOHC VTEC (what does VTEC means?)
SOHC
TOHC
I guess there should be many more engines but these are the engines I feel like knowing more about. Would really appreciate some engine experts here to elaborate more Also, I've heard things like 4 cylinders and 6 cylinders. What are those?
Any feedback helps
4 cyl+4 pistons/Head blocks 6 cyl=6 pistons/Head blocks
DOHC>Double Over Head Cam,V-Tec not sure some sort of Valves Technology?
SOHC>Single Over Head Cam
TOHC>??Have meh? -
for starters, the number of cylinders in an engine indicates the numbers of cylinders an engine has. the most basic thing to look out for is the configuration of the cylinders, the number of cylinders, the engine capacity, the number of valves and the nature of the engine. An eg would be: Inline 4, 1.6l 16 valves, naturally aspirated. that would mean this engine has 4 pistons(cylinders), arranged in a straight line. there are 4 valves to each piston, each piston displaces 0.4l, and the engine is not turbocharged or supercharged.Originally posted by seizure_00:I guess my knowledge in engines is really limited but I want to know what are the different kinds of engines out there. So far, I've heard these engines from the forums and magazines..
DOHC
DOHC VTEC (what does VTEC means?)
SOHC
TOHC
I guess there should be many more engines but these are the engines I feel like knowing more about. Would really appreciate some engine experts here to elaborate more Also, I've heard things like 4 cylinders and 6 cylinders. What are those?
Any feedback helps -
VTEC if i am not mistaken is Variable Timing Electronic Control is it?
Aiya..something like that...all the companies have different names for roughly the same technology. Like Mits has the Mivec technology that stands for Mits innovative variable electronic controller.
Ok..so what is Vtec? well..as my friend described it to me, it is as if u are have two cams, a set of normal cams and a set of racing cams.
When u rev till a certain rpm(with gear engaged) the Vtec will kick in and give u the extra boost and your car is porpell forward more at an even faster speed. -
as for the cylinder part...what Heng said is pretty much it.
I think most cars are 4 cylinders here? unless u talking baout all the ex ex racing cars la...
mine is a 4 cylinder 16 valve engine which calculates to 4 valves per cylinder lorr.
The Toyota Corolla AE111 overseas was using a 20 valve 4 cylinder 4ag-e engine...thus that will be 5 valves per cylinder.
hmm...anyone correct me if the info i give is wrong...i am still new to all these too...trying to pick up along the way. -
wow. cool dudes. thanks for the clarification !
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DOHC is dual overhead camshaft
SOHC is single overhead camshaft, basically the DOHC version produce more power.
V-TEC is Honda's version of variable valve timing and lift electronic control, which is essentially the same as Toyota's VVT-i, Mitsubishi's MIVEC(now known as MR which stands for Mitsubishi Racing)etc.. btw, if u read the history, it was Honda who came up with the idea first. V-TEC changes the valve timing according to the rpm of the engine to produce optimum power, and all this is controlled by the ecu. so if u want more power, go change its settings
as for TOHC, i'm not too sure(triple overhead camshaft? )
for cylinders, the more the merrier . 4 cylinders equals 4 pistons(the blocks of metal that moves up and down the engine when running), 6 cylinders equals 6 pistons and so on. there r also different arrangements of the pistons. most common for 4 cylinder is inline 4 or straight 4, where all 4 pistons r facing in the same direction. there is also horizontally opposed arrangement, which is used by Subaru(Boxer engine) and Porsche, and this provides better comfort due to lesser vibrations being transmitted into the cabin. performance-wise, the boxer engine gives better control due to better CG, however, it usually produces a little less power than the inline ones when capacity is low. there is also the V arrangement, which can be commonly found in high-end sport cars like Ferrari, Lamborghini etc. however, there is no engine with 4 pistons arranged in a V shape(harder to maintain i guess). the more common ones are V-6, V-8, V-10(used in F1) and V-12.
HENG@, i would appreciate if u could clarify if there is any TOHC engines around -
yeah...you are right dude...v-tec is some thing like valve i think...but when the tec opens when it reaches the stated rpm the power will be great ...and combine with the cam the car will perform very well...Originally posted by BlessingSatan:Engine types>Inline,Flat,Rotary,Boxer,Vee
4 cyl+4 pistons/Head blocks 6 cyl=6 pistons/Head blocks
DOHC>Double Over Head Cam,V-Tec not sure some sort of Valves Technology?
SOHC>Single Over Head Cam
TOHC>??Have meh? -
STiYaKuzA , very detailed explaination. How did you know all these
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well 1st time i've ever heard of TOHC... dun think haveOriginally posted by STiYaKuzA:DOHC is dual overhead camshaft
SOHC is single overhead camshaft, basically the DOHC version produce more power.
V-TEC is Honda's version of variable valve timing and lift electronic control, which is essentially the same as Toyota's VVT-i, Mitsubishi's MIVEC(now known as MR which stands for Mitsubishi Racing)etc.. btw, if u read the history, it was Honda who came up with the idea first. V-TEC changes the valve timing according to the rpm of the engine to produce optimum power, and all this is controlled by the ecu. so if u want more power, go change its settings
as for TOHC, i'm not too sure(triple overhead camshaft? )
for cylinders, the more the merrier . 4 cylinders equals 4 pistons(the blocks of metal that moves up and down the engine when running), 6 cylinders equals 6 pistons and so on. there r also different arrangements of the pistons. most common for 4 cylinder is inline 4 or straight 4, where all 4 pistons r facing in the same direction. there is also horizontally opposed arrangement, which is used by Subaru(Boxer engine) and Porsche, and this provides better comfort due to lesser vibrations being transmitted into the cabin. performance-wise, the boxer engine gives better control due to better CG, however, it usually produces a little less power than the inline ones when capacity is low. there is also the V arrangement, which can be commonly found in high-end sport cars like Ferrari, Lamborghini etc. however, there is no engine with 4 pistons arranged in a V shape(harder to maintain i guess). the more common ones are V-6, V-8, V-10(used in F1) and V-12.
HENG@, i would appreciate if u could clarify if there is any TOHC engines around -
oh by the way folks, there is a new cylinder bank arrangement. its called the "W" configuration. eg of this is the W16 engine in the Veyron.