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For instance, a dual port vacuum switch located in a port on the intake manifold monitored the coolant temperature in the coolant crossover. It received vacuum (port E on the switch) from the carburetor. The vacuum flowed through the switch to a vacuum solenoid (such as a heat riser, used to restrict exhaust allowing the engine to heat up faster).
Current Honda general-purpose engines are air-cooled 4-stroke gasoline engines but 2-stroke, Diesel, water-cooled engines were also manufactured in the past. The current engine range provide from 1 to 22 hp (0.7 to 16.5 kW). More than 5 million general-purpose engines were manufactured by Honda in 2009.
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. It is a ...
The intake manifold vacuum, with wide open throttle, is lower in these conditions, which causes the PCV valve to open and the crankcase gases flow to the intake system. [13] The greater flow rate of intake air during these conditions means that a greater quantity of blow-by gases can be added to the intake system without compromising the ...
The contact breaker is operated by an engine-driven cam.On an engine with a distributor, the contact breaker can be found beneath the distributor cap.The position of the contact breaker is set so that it opens (and hence generates a spark) at exactly the optimum moment to ignite the fuel/air mixture.
In 1984, the bike was introduced with Honda's Radial Four Valve Combustion Chamber (RFVC). [citation needed] It has a 110 kg (240 lb) claimed dry weight, [1] and a 36-inch seat height (96–04). Honda claims the engine produces 28 horsepower at 8000 rpm and 17 ft-lb feet of torque. The 1996–2004 versions of the XR250R had 10.6 inches of ...
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The Honda CB250F also known as the Honda Hornet 250 is a standard motorcycle which was launched by Honda in 1996. It was initially only available in Japan, as a domestic model but was made available to the rest of the world as a grey import .