engine capacity and horsepower

[plank]

horse power depand to rpm n torque

Horsepower formula = (2 x 3.142 x rpm x torque) / 1000
higher rev higher HP ... but torque will drop at certain rpm (why?? can anyone explain)
From my mind Big CC engine usually to get higher torque then HP ,,,, Big torque use to spin tyre faster ,,,, big load required massive torque,,, like diesel lorry..
engine design depend to usage. race, heavy load, save fuel.....
if my statement have a mistake please correct... hehehe

 

[BE5RSK]

Personally, I would compare the car spec sheets based on this priority:

(1) Power (HP) to weight ratio;
(2) Torque figures between 3000rpm to 5500rpm (for daily usage); and
(3) Max HP figures.

But, there is also lots of other variables that will reflect on how the engine power/output translated on the "real" roads, such as drivetrain loss (e.g. auto tranny vs manual tranny and FWD vs RWD vs AWD/4WD).

 

[Autopiazza]

4A-G Engine Codes

Every Toyota “engine type” has a code consisting of numbers and letters. An “engine type” may actually be a family of engines spanning several design generations and encompassing different specifications or components.



The first character is always a number followed by one or two letters. The number indicates the generation. The letter(s) indicates the engine family.



Following the engine generation and family codes, there are different combinations of additional letters, each of which represent a specific engine characteristic:



C - Equipped with emissions control systems (note: The “C” is not used if the engine was originally equipped for emissions controls.)(The C notation has been associated with California’s (USA), at that time having stricter emission standards)

U - Equipped with emissions control systems for Japan. (The U notation has been associated with the introduction of Unleaded fuel available in Japan at that time)

E - Electronic fuel injection (EFI)

F - Gear coupled cam drive; dual overhead cam (DOHC) engine: timing belt or chain drives one cam, and “scissors” gear drives the other cam. [Narrow included valve angle]. The split “scissors” gear is a unique way to eliminate gear backlash.

G - Dual overhead cam (DOHC) engine: timing belt or chain drives both cams. [Wide included valve angel]

L - Transversely mounted in vehicle

T - Turbocharged

Z - Supercharged





Examples:



4A - SOHC, 8 valves

4A-C - SOHC, 8-valves, equipped with emissions control system

4A-LC - SOHC, 8-valve, transversely mounted, equipped with emissions control system

4A-GE - DOHC, 16-valve, fuel injected

4A-GEC - DOHC, 16-valve, fuel injected, equipped with emissions control system

4A-GELC - DOHC, 16-valve, fuel injected, transversely mounted, equipped with emissions control system

4A-F - DOHC, 16-valve, gear coupled cam drive, carbureted

4A-FE - DOHC, 16-valve, gear coupled cam drive, fuel injected

4A-ELU - DOHC, 16-valve, gear coupled cam drive, fuel injected, transversely mounted, equipped with emissions control system for Japan.

4A-GZE - DOHC, 16-valve, supercharged and fuel injected

nice info 2 share, is this coding apply on other car manufacturer? or just toyota only

 

[redsider]

nice info 2 share, is this coding apply on other car manufacturer? or just toyota only

only for toyota