Engine
A technology of engine and fuel injection, which is applied in the direction of engine components, engine control, combustion engine, etc., and can solve problems such as insufficient response to throttle operation, deterioration of exhaust state, combustion, and deterioration of exhaust state
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Embodiment 1
[0043] Figure 1 to Figure 5 It is a view for explaining an intake device of an engine for a motorcycle (two-wheeled motorcycle) according to Embodiment 1 of the present invention. figure 1 is a side sectional view, figure 2 It is a plane sectional view, and Fig. 3 is a schematic diagram showing an injection port, Figure 4 is a characteristic diagram showing the relationship between the load and opening of the first and second throttle valves, Figure 5 It is a characteristic diagram showing the relationship between fuel injection timing and fuel consumption. In addition, in the present embodiment, front, rear, left, and right refer to front, rear, left, and right when the engine is mounted on the vehicle frame and seen with the occupant seated.
[0044] figure 1 with figure 2 The engine 1 shown has an air supply mechanism and an injector 11, wherein the air supply mechanism supplies air to the cylinder through the intake valve opening 3e, at an angle, i.e., with the f...
Embodiment 2
[0118] Figure 16A To show a planar sectional view of an engine according to Embodiment 2 of the present invention, Figure 16B is a side sectional view showing an engine according to Embodiment 2 of the present invention. exist Figure 16A In , the ECU (Engine Control Unit) is omitted for convenience.
[0119] The engine 100 of this embodiment 2 corresponds to figure 1 The engine 1 of the illustrated embodiment 1 has the same basic structure, the same reference numerals are used for the same constituent elements, and descriptions thereof are omitted, and only different constituent elements are described.
[0120] Engine 100 removed figure 1 The second throttle valve in the shown engine 1 is provided with an ISC (Idle Speed Control) valve 120 .
[0121] Specifically, the engine 100 has a first throttle valve 5a and an ISC valve 120, the former is provided on the intake port side in the main passage of the throttle body 105, and is in a fully closed state from no load to...
Embodiment 3
[0140] Figure 20A is a plan sectional view showing the structure of an engine according to Embodiment 3 of the present invention, Figure 20B It is a side sectional view showing the structure of an engine according to Embodiment 3 of the present invention.
[0141] For the engine 200 of this embodiment 3, the substitution corresponds to figure 1 The first throttle valve 5 a in the engine 1 of the shown embodiment is provided with an intake piston 220 , and the rest of the structure has the same basic structure as that of the engine 1 . Therefore, the same reference numerals are used for the same constituent elements, their descriptions are omitted, and only different constituent elements are described.
[0142] That is, the engine 200 has the second throttle valve 5b and the intake piston 220, the former is provided on the main passage in the throttle body 205, on the upstream side of the branching part of the secondary passage 213, and the latter is provided on the downstr...
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