Mazda B engine
With the 3. As the piston approaches top-dead center, the doch двигатель is ignited by the spark plug. The fuel injectors are located beneath the intake ports.
The intake ports only transfer air, unlike port fuel injection, which flows air and doch двигатель, thus increasing efficiency. D irect injection also permits a slightly higher compression ratio than if the fuel were doch двигатель with conventional fuel injection. The result is better fuel consumption at part and full throttle.
The engine uses conventional spark plugs similar to other high-feature V6 engines. A high-pressure, returnless fuel system is employed.
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It features a high-strength stainless steel fuel line that feeds a variable-pressure fuel rail. Direct injection requires higher fuel pressure doch двигатель conventional fuel injected engines and an engine-driven high-pressure fuel pump is used to supply up to 1, psi bar doch двигатель pressure.
The system regulates lower fuel pressure at idle — approximately psi 35 bar and higher pressure at wide-open throttle. The exhaust cam-driven high-pressure pump works in conjunction with a conventional fuel tank-mounted supply pump. Also, doch двигатель injection permits a higher compression ratio — greater than Cam phasing pays big dividends in reducing exhaust emissions by doch двигатель exhaust valve overlap and eliminating the need for a separate exhaust gas recirculation EGR system.
By closing the exhaust valves late at appropriate times, the cam phasers allow the engine to doch двигатель the desired amount of exhaust gas back into the combustion chamber, reducing unburned hydrocarbon emissions. The return of exhaust gases also doch двигатель peak temperatures, which contributes to the reduction of oxides of nitrogen NO x emissions.
In tandem with the doch двигатель percent reduction in cold-start hydrocarbon emissions brought on by direct injection, the 3.
The liter Chevrolet engine named as the F16D4 engine is the result of the F16D3 evolution. This new engine was equipped with the variable valve timing system (VVT) and system what changes intake and exhaust channel lengths (variable intake manifold).
GM Powertrain announced today it will deliver a 3. A vehicle application will be announced later in the doch двигатель. Direct injection differs from the fuel delivery process of a conventional engine by delivering fuel directly into doch двигатель engine cylinder, where it is mixed with air.
The combustion process of conventional fuel injected engines uses air and fuel that partially doch двигатель in the intake port or intake manifold prior to doch двигатель introduced into the combustion chamber.
Doch двигатель injection is a continuation of the evolutionary process of moving the fuel introduction point closer to the cylinder to improve control.
Power and torque outputs varied across markets due to emission and fuel standards. The Japanese version was slightly more powerful, producing PS kW and The engine uses a DOHC valve alloy head with a lightened crankshaft and flywheel to allow a 7, rpm redline.
An aluminium sump with cooling fins doch двигатель an unusual feature of this engine.
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The US and European version had a 9. The Japanese doch двигатель of the engine also had a 9.
Rather, it uses a new block with widened cylinder spacing. The bore is 83 mm and the stroke is 85 mm. It features hydraulic lash adjusters, a doch двигатель cam, an 8. The 1, cc 1.
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This particular variant can be found in the following vehicles:. There is also a non-performance Doch двигатель version that is most easily recognized by its black stamped-steel oil pan.
It also features a cast crankshaft, no oil squirters, a plastic oil pickup tube and less aggressive camshafts. It is found in the Mazda Protege ES. It produced PS kW at 6, rpm and doch двигатель It featured a larger crank nose, larger piston oil squirters, a main bearing support plate, better doch двигатель inlet and exhaust ports. This engine was designed to power Doch двигатель to a world rally championship win, and was thus used in the limited production Mazda Familia GT-R 2, built and GTAe built.
The MX-5 uses a modified BP, the BP-4Wwhich replaces the old hall effect dual Cam Angle Sensor doch двигатель mounted at the back of the exhaust cam with two separate Hall Effect units at the front — one on doch двигатель intake cam gear and one mounted on the oil pump, to the side of the crankshaft pulley.
It also has an improved intake system a better flowing doch двигатель head because of the angle of the intake ports being changed. There was also a switch from the earlier problematic hydraulic lifters to solid lifters.
InMazda introduced the still 1.
A similar looking but effectively very different set of valves that restrict doch двигатель intake on cold start for emissions purposes, rather than doch двигатель torque enhancing set of partial butterflies that increase velocity that are used in VICS.
The Z family is an evolution of this engine.
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doch двигатель From Wikipedia, the free encyclopedia. Motor vehicle engine. Retrieved Archived from the original on March Automobil Revue in German and French.
Berne, Switzerland: Hallwag AG.
