Often, an EGR valve might work while testing, but stick intermittently. When there is a suspicion that the EGR valve is sticking, or it shows carbon buildup, it is usually replaced together with a new gasket. Cheaper aftermarket parts are available. Whenever the EGR valve is removed, the E...
The engine computer helps in opening or closing the EGR valve to control the flow in the EGR system. Here, the EGR valve is used to connect the exhaust manifold and the intake manifold. This valve is generally closed, so there is no EGR flow whenever the engine is cold, inactive, or t...
Nine out of ten times, the fault is not a bad EGR valve or a vacuum leak, but a bad DPFE sensor. A replacement costs about $112 at Ford, or about $48 at an aftermarket auto parts store.EGR TROUBLESHOOTINGThe following "generic" procedure can help you troubleshoot EGR problems....
FIG. 1 is a diagram describing the functional principle of the present invention. A valve element10, in the present case implemented in two parts of a sealing ring10″ and a metal bracing plate10′, is secured on a stem20. This stem20is implemented at its upper end in the form of a...
3 is a set of schematic diagrams of one embodiment of the positions of an optional rotary valve; [0016] FIG. 4 is a set of diagrams showing the lift profiles of the various valves of the engine with an electronic flow control system; [0017] FIG. 5 is a diagram showing effective ...
of parts of the intercooler, and the unreliability of the low-pressure EGR valve and cooler [22]. Koder et al. [23] investigated the combustion and emission behavior of vegetable oil, jatropha oil, soybean oil, and diesel fuel. As a result, as the EGR rate increased, the emission ...