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Gasoline direct injection - Wikipedia, the free encyclopedia (1003 words) |
 | The fuel is not injected at the intake stroke but rather at the latter stages of the compression stroke, so that the small amount of air-fuel mixture is optimally placed just near the spark plug. |
| In this mode, fuel is injected during the intake stroke. |
| The fuel is injected during the intake stroke. |
| FUEL INJECTION (827 words) |
| The net effect is that some 25% to 40% of air, and inherently fuel are wasted resulting in high fuel consumption and at the same time increasing radically the amount of unburned hydrocarbons in the exhaust in recent years. |
| The combined effect is that little or none, of the fuel reaches the crank-case and when the scavenge process commences with the opening of the transfer ports, a stratified charging process begins with air only in the proximity of the exhaust port and the rich mixture retained as remotely as possible from the exhaust port. |
| The SCIP system is derived from IFP’s compressed air-assisted fuel injection process (IAPAC), in which the fuel is introduced into the cylinder separately from the scavenging air to minimise fuel short-circuiting. |
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