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A flat-four engine, also known as a horizontally opposed-four engine or boxer engine, [1] is a four-cylinder piston engine with two banks of cylinders lying on opposite sides of a common crankshaft. The most common type of flat-four engine is the boxer-four engine , each pair of opposed pistons moves inwards and outwards at the same time.
For this inline-4 engine, 1-3-4-2 could be a valid firing order. The firing order of an internal combustion engine is the sequence of ignition for the cylinders. In a spark ignition (e.g. gasoline/petrol) engine, the firing order corresponds to the order in which the spark plugs are operated. In a diesel engine, the firing order corresponds to ...
A "twingle" is a four-stroke twin-cylinder engine with an altered firing order designed to give power pulses similar to a single-cylinder four-stroke engine. Inline twins with a 360° crankpin offset or flat-twins can be easily converted into twingles by firing both of the cylinders at the same time and installing a camshaft or camshafts that ...
A Chevrolet Impala 9C1 displayed at the 2008 Chicago Auto Show. 9C1 is a production code used by Chevrolet to designate a vehicle intended for use as a police car or car-based emergency vehicle. 9C1-designated vehicles are marketed under the Police Pursuit Vehicle or Police Patrol Vehicle (PPV) nameplate.
The Essex V4 is a 60° V4 engine with a cast iron cylinder block and heads. The engine block was just 20 in (510 mm) long. [3]: 60, 61 The engine uses crossflow cylinder heads with 2 overhead valves per cylinder operated through pushrods and rocker arms by a single camshaft in the block. Inlet valves had a diameter of 41 mm (1.6 in), while ...
The cylinder heads also sport a more conventional three-port exhaust manifold. Output was rated at 140 hp (104 kW; 142 PS) at 4600 rpm and 170 lb⋅ft (230 N⋅m) at 2600 rpm for the light trucks (1986–92 Ranger and 1986–90 Bronco II) and 144 hp (107 kW; 146 PS) at 4800 rpm for the Merkur Scorpio in the US market and 150 to 160 hp (112 to ...
I have removed the firing order 1-2-3-4 assigned to the Proton Wira VDO engine. This car uses the Mitsubishi Orion engine 4G13 or 4G15, which has a standard 180 degrees planar crank. Hence 1-2-3-4 makes no sense. I expect it comes from their V6, which has a firing order 1-2-3-4-5-6.
the 162 kW (only Polo R WRC) and higher versions have stronger pistons and gudgeon pins, new rings, reinforced connecting rods, new bearings, reinforced cylinder block at the main bearing pedestals and cap, new lightweight aluminium-silicon alloy cylinder head for high temperature resistance and strength, adjusted exhaust camshaft timing ...