Search results
Results From The WOW.Com Content Network
In line with the IDI diesel, the Power Stroke was offered in three-quarter-ton and larger versions of the Ford F-Series and Econoline product ranges. The Power Stroke is an electronically controlled, direct injection engine with a 4.11 in × 4.18 in (104.4 mm × 106.2 mm) bore and stroke creating a displacement of 444 cu in (7.3 L).
The power stroke begins after the air-fuel mixture is ignited. The burnt fuel creates pressure in the cylinder above the piston and forces it downward. As the piston passes the midpoint of the downstroke, the exhaust port to the side of the cylinder is uncovered and initiates the flow of burned fuel into the expansion chamber or muffler.
An Exhaust Gas Heat Recovery system allows the engine and cabin to warm up during winter conditions, while an 80-cell, 1.5 kWh lithium-ion battery pack provides electric power to the hybrid system, powering the Malibu Hybrid up to 55 mph (89 km/h) on electricity alone, while the gasoline-powered engine automatically comes on at higher speeds ...
Combined with the acoustic wave there is a general rise in pressure in the chamber caused by deliberately restricting the outlet with a small tube called the stinger, which acts as a bleeder, emptying the chamber during the compression/power stroke to have it ready for the next cycle. The stinger's length and inside diameter are based on 0.59 ...
An alternate design of two-stroke engines is where the exhaust port is opened/closed using a poppet valve and the intake port is piston-controlled (opened by being uncovered by the piston). The timing of the exhaust valve closure is designed to assist in filling the cylinder with the next intake charge (as per four-stroke engines).
The 4.3 L (262 cu in) also used larger valves than the 229 cu in (3.8 L) V6, with a 1.94-inch (49.3 mm) intake valve and a 1 + 1 ⁄ 2-inch (38.1 mm) exhaust valve (also shared with the 350). [2] In 1986 and 1987, the 4.3 L (262 cu in) engine saw engine design upgrades similar to the Chevrolet small block V8.
Scavenging is the process of replacing the exhaust gas in a cylinder of an internal combustion engine with the fresh air–fuel mixture (or fresh air, in the case of direct-injection engines) for the next cycle. If scavenging is incomplete, the remaining exhaust gases can cause improper combustion for the next cycle, leading to reduced power ...
Manifold vacuum, or engine vacuum in a petrol engine is the difference in air pressure between the engine's intake manifold and Earth's atmosphere.. Manifold vacuum is an effect of a piston's movement on the induction stroke and the airflow through a throttle in the intervening carburetor or throttle body leading to the intake manifold.