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One unusual feature of the ISB is that it is a multi-valve pushrod engine design, with four valves per cylinder (popularly referred to as the "24-Valve" Cummins). The engine displaces 5.9 L; 359.0 cu in (5,883 cc), with a 102 mm × 120 mm (4.02 in × 4.72 in) cylinder bore and piston stroke.
The Oldsmobile engine was very similar to the Buick engine, but not identical: it had larger wedge combustion chambers with flat-topped (rather than domed) pistons, six bolts rather than five per cylinder head, and slightly larger intake valves; the valves were actuated by shaft-mounted rocker arms like the Buick and Pontiac versions, but the ...
It is fuel injected, has an aluminum-alloy cylinder block and cylinder head, is a SOHC 16-valve design (four valves per cylinder) and utilizes Honda's i-VTEC system. The R series engine has a compression ratio of 10.5:1, features a " drive by wire " throttle system which is computer controlled to reduce pumping losses and create a smooth torque ...
cast aluminium alloy; two valves per cylinder, 10 valves total, hydraulic bucket tappets with automatic valve clearance compensation, timing belt-driven single overhead camshaft (SOHC), swirl-inducing intake ports aspiration turbocharger, intercooler; 80 kW and higher: Variable Turbine Geometry (VTG) variable-vane turbocharger
The engine had MPFI (multi-port fuel injection), which gave slightly more power and better fuel economy, and two valves per cylinder. The engine had a bore and stroke of 4 + 1 ⁄ 4 in × 4 in (108.0 mm × 101.6 mm), producing 290 hp (216 kW) at 4000 rpm and 410 lb⋅ft (556 N⋅m) at 3200 rpm.
Power ranges from 66 PS (49 kW) in the Logo to 130 PS (96 kW) in the Civic Si. D-series production commenced in 1984 and ended in 2005. D-series production commenced in 1984 and ended in 2005. D-series engine technology culminated with production of the D15B 3-stage VTEC (D15Z7) which was available in markets outside of the United States.
The Vortec 4800 L20 makes more power and features variable valve timing. The system adjusts both intake and exhaust timing but does not come with Active Fuel Management. The L20 has a cast-iron block and power output is 260–302 hp (194–225 kW) while torque is 295–305 lb⋅ft (400–414 N⋅m).
Starting with a 2.5-liter four-cylinder hybrid model rated at 149 kW (200 hp), a 2.5-liter four-cylinder gasoline engine rated at 133 kW (178 hp) and 230 N⋅m (170 lb⋅ft), and a 3.5-liter V6 rated at 200 kW (268 hp) and 336 N⋅m (248 lb⋅ft). Power output has been increased mostly by switching to electro-hydraulic power steering.