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EGR has nothing to do with oil vapor re-routing from a positive crankcase ventilation system (PCV) system, as the latter is only there to reduce oil vapor emissions, and can be present on engines with or without any EGR system. However, the tripartite mixture resulting from employing both EGR and PCV in an engine (i.e. exhaust gas, fresh air ...
The pump's air intake is filtered by a rotating screen or the vehicle air filter to exclude dirt particles large enough to damage the system. Air is delivered under light pressure to the injection point(s). A check valve prevents exhaust forcing its way back through the air injection system, which would damage the pump and other components.
The "all hand-assembled" LS2 SD455 engine was rated at 290 at 4,000 rpm and 395 lb/ft at 3,600 rpm. All Pontiac engines included a new EGR system, which delayed the SD-455 program until late into the production year. The shaker decal on the scoop read "SD-455". The 1973 Trans Am introduced "Radial Tuned Suspension".
OBD-II PIDs (On-board diagnostics Parameter IDs) are codes used to request data from a vehicle, used as a diagnostic tool.. SAE standard J1979 defines many OBD-II PIDs. All on-road vehicles and trucks sold in North America are required to support a subset of these codes, primarily for state mandated emissions inspections.
Cordierite Diesel Particulate Filter on GM 7.8 Isuzu. Unlike a catalytic converter which is a flow-through device, a DPF retains bigger exhaust gas particles by forcing the gas to flow through the filter material before exiting; [2] [29] however, the DPF does not retain small particles. Maintenance-free DPFs oxidise or burn larger particles ...
Balancing the percentage of cooled external EGR with the hot internal EGR generated by a VVA system, makes it possible to control the in-cylinder temperature. While electro-hydraulic and camless VVA systems offer control over the valve event, the componentry for such systems is currently complicated and expensive.
While shelters have seen a higher rate of dogs being returned to owners, adopted, or living in the shelter system, cats faced euthanasia 10 times more often than dogs in the first half of 2024.
New emission standards added EGR (exhaust gas recirculation) valves to engines (with a new roller camshaft), and horsepower ratings were reduced. The standard Turbo-Fire 400 cu in (6.6 L) two-barrel was now rated at 150 hp (112 kW) while the only optional engine was the Turbo-Jet 454 cu in (7.4 L) V8 produced 245 hp (183 kW) with dual exhaust ...
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