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injdata-pressure [2011/12/13 15:28] twdorris |
injdata-pressure [2011/12/23 12:07] twdorris |
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====== Injector Data - Base pressure ====== | ====== Injector Data - Base pressure ====== | ||
Fuel flow rate through an injector is affected by a number of different things. This page focuses on the effects of base fuel pressure and its influence on injector deadtime. | Fuel flow rate through an injector is affected by a number of different things. This page focuses on the effects of base fuel pressure and its influence on injector deadtime. | ||
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===== Overview ===== | ===== Overview ===== | ||
- | Flow rate through an injector is substantially influenced by the pressure differential across the injector. If we assume that a given injector has been rated at the industry standard of 3-bar (43.5 psi), then the well-known formula for calculating the effect of changing fuel pressure is below. | + | Flow rate through an injector is substantially influenced by the pressure differential across the injector. If we assume that a given injector has been rated at the industry standard of 3-bar (43.5 psi), then the well-known formula for calculating the basic fuel flow effect of changing fuel pressure is below. |
NewFlowRate = RatedFlowRate * squareroot(NewBasePressure / 43.5) | NewFlowRate = RatedFlowRate * squareroot(NewBasePressure / 43.5) |