[peelbrow]

Is the Burgman's fuel injection system direct or indirect? ie: is the fuel injected directly into the cylinder or is it injected into the inlet manifold? Does anyone know? :?

 

[Buffalo]

It injects into the manifold.

 

[peelbrow]

It injects into the manifold.

Yes, I thought it might be indirect because of the relatively lower fuel pressure and a better air/petrol mix than the directy method. Thanks for the info.

 

[Just Me]

and a better air/petrol mix than the directy method. Thanks for the info.

??????????????

 

[29534]

It injects into the manifold.

Yes, I thought it might be indirect because of the relatively lower fuel pressure and a better air/petrol mix than the directy method. Thanks for the info.

My car has direct injection and it works better than indirect injection. Direct injection is a relatively new thing for gasoline engines (diesels have had it for years) and it is just now becoming more widely used in cars. It provides better economy and better power.

 

[QuantumRift]

I have a 2012 Genesis that has GDI and it gets very good mileage.

There are three types of fuel injection for IC engines:

Gas Direct Injection
Throttle Body (one injector)
Manifold (multi-injector)


and as mentioned, diesels do direct injection but they are diesels.

 

[Dave_J]

I have a 2012 Genesis that has GDI and it gets very good mileage.

There are three types of fuel injection for IC engines:

Gas Direct Injection (GDI)
Throttle Body (one injector) (slightly better than a carburetor)
Manifold (multi-injector)


and as mentioned, diesels do direct injection but they are diesels.

http://www.diseno-art.com/encyclopedia/ ... ction.html

A proper designed "Common Rail Direct Injection" system can be Gas or Diesel and will if programed right will always give optimal efficiency and emissions. The word GAS can be any volatile fuel like gasoline, wood smoke, Menthol, Ethanol, Hydrogen......... Diesel can also be so many different types of slow burning fuels. Dr Diesel designed the engine to run on vegetable oils, FUNNY how we return to the old ways.

In the newer GDI engine the gasoline is injected in the combustion chamber at the start of the intake cycle so low fuel pressures are required. On a deisel CDI Engine the fuel is injected at or right before top dead center of the compression cycle when the compressed air if at its hottest and the fuel is ignited by the heat.

 

[MJR]

I have a 2012 Genesis that has GDI and it gets very good mileage.

Must be the sedan (3.8L or 5.0L) because the coupe doesn't offer GDI until 2013 and only on the 3.8L. For anyones interest here's the fuel pressure specs on the 2012 Genesis Sedan. Yes high pressure side is 725.2 psi to 1,740.5 psi and that's because the fuel is usually injected just before it's ignited. Years ago when I was talking with a Chrysler engineer and they were using direct injection on some two stroke engines they were playing with he told me with GDI the precision of the fuel injection event was 2* of the crank revolution, impressive. Also on a note the high side fuel pressures are sufficent to cut through the skin and can kill.

Fuel Pressure
Low Pressure Fuel Line
480 ~ 520 kPa (4.9 ~ 5.3 kgf/cm², 69.6 ~ 75.4 psi)

High Pressure Fuel Line
5.0 ~ 12.0 MPa (51.0 ~ 122.4 kgf/cm², 725.2 ~ 1740.5 psi)

 

[QuantumRift]

Yes, it's the 3.8 Genny Sedan.

The GDI system makes a very noticeable "CLICKING" sound when the engine is at idle. Some folks on the Genesis board were concerned about it, but it's as normal to the Genny as the Burgie dieseling sound is to the 650.

I have a 2012 Genesis that has GDI and it gets very good mileage.

Must be the sedan (3.8L or 5.0L) because the coupe doesn't offer GDI until 2013 and only on the 3.8L. For anyones interest here's the fuel pressure specs on the 2012 Genesis Sedan. Yes high pressure side is 725.2 psi to 1,740.5 psi and that's because the fuel is usually injected just before it's ignited. Years ago when I was talking with a Chrysler engineer and they were using direct injection on some two stroke engines they were playing with he told me with GDI the precision of the fuel injection event was 2* of the crank revolution, impressive. Also on a note the high side fuel pressures are sufficent to cut through the skin and can kill.

Fuel Pressure
Low Pressure Fuel Line
480 ~ 520 kPa (4.9 ~ 5.3 kgf/cm², 69.6 ~ 75.4 psi)

High Pressure Fuel Line
5.0 ~ 12.0 MPa (51.0 ~ 122.4 kgf/cm², 725.2 ~ 1740.5 psi)