Engine and carburetor thereof

Abstract

The invention discloses an engine and a carburetor thereof, the carburetor comprises a carburetor body, a mixing chamber for mixing oil and gas is arranged on the carburetor body, and a throttle valve is arranged in the mixing chamber; the inner wall of the mixing chamber is provided with a plurality of transition hole channels for fuel oil to flow into the mixing chamber, and the preset position of the throttle valve and / or the preset position of the inner wall of the mixing chamber are / is provided with gas inlet parts for gas to enter the mixing chamber. The preset position is the far end position, away from the throttle valve shaft, of the throttle valve, or the preset position is the position, close to the far end of the throttle valve, of the transition hole channel. According to the carburetor, the air inlet part is arranged and matched with the transition hole channel, so that enough fuel oil and air are sucked out through the transition hole channel and form mixed gas with air passing through the air inlet part, the mixed gas is introduced into an engine combustion chamber, and it is guaranteed that an engine is started easily; according to the carburetor, the engine is easy to start on the premise that the control structure and the control mode of the existing engine are not changed and the idle speed or the low rotating speed and the small oil consumption can be basically guaranteed.

Description

technical field [0001] The invention relates to the field of engines, in particular to a carburetor. In addition, the present invention also relates to an engine comprising the above-mentioned carburetor. Background technique [0002] When the engine starts, the throttle opening of the carburetor can be operated larger than the corresponding throttle opening when the engine is idling or low speed, and more clean air enters the oil-gas of the carburetor when starting The mixing chamber makes the oil and gas fully mixed, which greatly improves the ignition success rate of the engine. After the engine starts (that is, after the ignition is successful), the throttle valve of the carburetor will quickly and automatically change Large start-up opening returns to idle speed or low speed opening to save fuel. [0003] However, when the engine is used as the driving power of a small boat (that is, when it is used as a marine power), from the perspective of saving costs and improvin...

AI Technical Summary

Problems solved by technology

[0005] If it is necessary to maintain the minimum fuel consumption of the marine engine at idle speed or low speed, it will become difficult to start, especially when the engine is started, it may take multiple starts to successfully ignite; if it is necessary to ensure normal start, according to the usual design ideas, The only option is to increase the throttle opening at startup, but this will inevitably increase the throttle opening at idle or low speed, which will only increase fuel consumption; Balance, but such a balance is actually extremely difficult to achieve because the throttle opening control mechanism (that is, the throttle combination) of the marine engine is relatively simple and its control process is not precise.

Therefore, on the premise of maintaining the existing low-cost design and simple control of the throttle (controlling the throttle opening), the marine general-purpose engines of various manufacturers in the industry basically have difficulty in starting, especially starting in a hot engine state (which can be called hot start) difficult problem

For users, the operation is inconvenient and the user experience is not good. Long-term poor startup will lead to serious carbon accumulation in the machine, low power, bad emissions, and affect the environment.

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