Search results
Results from the WOW.Com Content Network
Carbon build-up in the intake manifold will occur when blow-by gases are allowed to permanently contaminate the intake air because of a failing PCV system. [12] Carbon build-up or oil sludge from blow-by gases on intake valves are usually not a problem in port injected engines. This is due to the fact that the fuel hits the intake valves on the ...
By June 2020, VW had already expended $33.3 billion in settlements and other costs including buybacks of the excessively polluting diesel vehicles. In a statement, VW said it would ask the circuit court to review the ruling, and that the company if necessary would take the case to the U.S. Supreme Court. [306]
Gasoline direct injection (GDI), also known as petrol direct injection (PDI), [1] is a mixture formation system for internal combustion engines that run on gasoline (petrol), where fuel is injected into the combustion chamber. This is distinct from manifold injection systems, which inject fuel into the intake manifold (inlet manifold).
secondary air injection pump for direct injection into exhaust ports to assist cold start operation, cast iron exhaust manifold (with integrated turbocharger), one primary and two secondary high-flow sports catalytic converters, two heated oxygen sensors monitoring pre- and post-primary catalyst exhaust gases (secondary catalysts unmonitored ...
Since fuel is directly injected inside the combustion chamber, it never gets a chance to wash any contaminants behind the valves. This results in excessive carbon build up over time, hindering performance. Some engines (like Toyota's Dynamic Force engines) combine direct injection with traditional multi port fuel injection to ameliorate this ...
Bosch 2,000 bar (29,010 psi) common rail (CR) (one rail per cylinder bank) direct injection: with two chain-driven high-pressure fuel pumps, fuel cooler for return line, twelve combustion chamber-sited eight-hole (0.12 mm (0.0047 in)) piezo injectors with multi-pulse injection (up to five injection operations per piston cycle, including pre ...
Prior to Volkswagen Group's first TDI engine, the first turbocharged diesel engine used in a passenger car was an indirect injection five-cylinder engine fitted to the 1978 Mercedes-Benz 300SD (W116) 300 SD sedan. [13] The first turbodiesel engine with direct injection was the 1986 Fiat Croma 2.0 TD i.d. liftback sedan. [14]
In addition, the vehicle with a carbon dioxide emissions of 179 g CO 2 /km is permitted, but in real operation on the road, according to DUH, the emissions are on average 241 g CO 2 /km. In addition to the diesel passenger car Audi A8 4.2 TDI with emission standard Euro 6, which according to own data was measured on average 1,422 mg NO x /km ...