JP2003113705A - Retractable moving cam - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the fuel economy of a vehicle, dispense with a clutch and a torque converter device, and facilitate a switchover of power between motor travel and engine travel of a hybrid vehicle. SOLUTION: A normal cam, a new cam slidably built therein, and a part for preventing dislodgment of the new cam are employed. The new cam is slid by a hydraulic pump or mechanically. A starting motor is used. A new clutch that combines clutch plates for transmitting only rotation and meshing teeth for transmitting power is adopted.

Description

Detailed Description of the Invention

[Industrial field of application] A vehicle that draws traveling power by compression explosion in an engine having a cylinder.

[Prior Art] A vehicle produces motive power in cycles of engine compression, explosion, exhaust, and intake. Explosion extracts driving power, and compression extracts engine braking. Compression is necessary in stopping the car early, but unnecessary for coasting. To coast, step on the clutch or put the gear in neutral. Fuel is still used during this operation. Even when not in use, when returning to the original running, the accelerator is set to the engine speed according to the stepping speed or the original running is performed with a half clutch.

[Problems to be Solved by the Invention] (a) When the foot is released from the accelerator, engine braking is applied. (B) Fuel is used even when the foot is removed from the accelerator. (C) You cannot inertially drive unless you continue to depress the clutch or put the gear in neutral. (D) When returning from coasting to normal driving, the engine speed must be adjusted according to the speed of the car. (E) Clutch pedal and torque converter are required. As described above, how to facilitate the inertial driving is that the vehicle cannot run without pressing the clutch, or it is made to solve these.

[Means for Solving the Problems] (a) In the engine, when the crankshaft makes two revolutions, the camshaft makes one revolution, and the normal cam operates only during intake and exhaust. Even with the same piston movement, the cam does not work during compression and explosion. Here, by newly installing a new movable cam that performs exhaust operation during compression operation and intake operation during explosive operation, the piston cycle is only repeated intake and exhaust. That is, by releasing the pressure in the cylinder, coasting can be facilitated, which improves fuel efficiency. (B) The new movable cam is interlocked with the rotation of the accelerator and engine, and moved only when necessary. (C) When starting the car from a stopped state, the car may be started via a clutch, but a motor that can move the car up to about 2000 rpm in low gear and back gear is installed. After that, the car is powered by the engine power.
When changing gears while the car is moving, do so when there is no pressure in the cylinder. To make the gear change more smoothly, use the clutch [Fig. 6]. When [Fig. 6] is adopted, the rotation of (F) is transmitted to (D) via (K). Here, electricity is applied to (e) and (d) and (c) are brought into close contact with each other. Here, the rotation of (F) smoothly connects to (A). In (e), a material that can cause a time difference or a pressure difference is used. Therefore, due to (e), (h) approaches the (i) side again, and the teeth mesh smoothly with the same rotation.

[Embodiment] In the case of one-cam two-valve-This time, in the case of low gear and back gear, when there is no clutch for connecting the rotation of the motor to the engine and a clutch for keeping the normal engine rotation in the mission. I will explain. That is, the main shaft of the engine and the main shaft on the mission side do not go through the clutch.・ The newly installed new cam will flow out of electricity from the normal cam when electricity flows, and intake and exhaust air. (B) Turn the start key. Do not step on the accelerator at this point. In (c), electricity does not flow, the motor in (k) does not move, and the car cannot run. (B) Shift to low gear and step on the accelerator in (c).
The rotation detector of (z) activates the switch of (e) and the switch of (j) to start the motor of (k). At this time, the hydraulic pump of (p) is turned on, the new cam of the cam operates, and the fuel pump of (g) does not operate at OF. The car starts running only on battery power. The car engine repeats intake and exhaust. (C) When the tachometer becomes 2000 rpm or more, the switch of (i) is turned on by (z), the fuel pump of (g) operates, and the regular engine moves. The fact that electricity flows through the switch of (i) means that the motor of (k) and the hydraulic pump of (p) become OF. The car will be a normal engine with intake, compression, explosion and exhaust. (D) Increase the gear to 2nd, 3rd, 5th. At this time, take your foot off the accelerator. Electricity flows directly (p), the pump is ON, and the new cam only intakes and exhausts. The engine stops at the time of connecting the 2nd speed, the 3rd speed and the shift up / down. Here, at the moment when the gear meshes with the second gear and the third gear, there is no pressure in the engine, the engine brake is not applied, and the rotation of the corresponding gear is immediately transmitted to the engine.

[Brief description of drawings]

[Figure 1] Overall view of the cam

FIG. 2 shows a relationship between a new movable cam and a normal cam, and a slide cam part development product diagram (2-1) A cam diagram in which circles are connected by a tangent line (2-2) A cam diagram composed of circles or ellipses (2 -3) Relationship diagram between normal cam and slide cam (2-4) Cam diagram without slide cam part (2-5) Slide cam part development view (2-6) Slide cam part development view (2-7) Slide Cam part development view

FIG. 3 is a relationship diagram of a cam, a cam shaft, and a rocker arm.

FIG. 4 is a relationship diagram between a normal cam and a new cam

FIG. 5 is a position diagram of a normal cam and a new cam in an intake / exhaust cycle.

[Fig. 6] Clutch diagram with time difference

[Fig. 7] Electric wiring diagram

[Explanation of symbols]

(A) Newly installed cam section (a) Battery (B) New cam slide surface (b) Fuse (C) Normal cam section (c) Switch interlocked with accelerator (D) Cam shaft (d) Interlocked with brake Switch (E) New cam pop-out prevention pin (e) Acts on low gear and back gear (F) Oily switch (G) New cam housing (f) Acts on other than low gear and back gear (H) Rocker arm Switch (I) Rocker arm spindle (g) Fuel pump (J) Conrot (h) Plug (L) Hydraulic pump (i) LSR at 2000 rpm or higher (M) Camshaft bearing switch that turns ON (N) Valve ( j) LSR within 2000 rpm (O) Switch that turns on when slotted (k) Motor (A) Cam part (l) Motor power that is a close circle between circles Transmission part (i) Elliptical cam part (m) Gear box (u) Circle-to-circle close cam new cam part (n) Timing belt (e) Circle or ellipse new cam part (o) Cam ( O) New cam storage part (p) Hydraulic pump (or) Oil passage in new cam (r) Ground (v) Ring groove for preventing popping out (s) Crankshaft (K) Needle hole ... Small hole (t) Clutch (D) Camshaft (z) LSR, rotation detector (D) Ring slide surface to prevent popping out (D) New cam slide surface (A) Engine side main shaft (D) Camshaft oil passage (B) Engine side meshing teeth (SE) Surface for sliding new cam (C) Clutch plate (S) Projection prevention ring (D) Sliding clutch plate (E) Electromagnetic clutch (F) Transmission side main shaft (K) Spline groove (K) Transmission side mesh

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Claims (2)

[Claims] 1. A normal cam has a structure in which a circle and a part of a circle or an ellipse are combined at the end of the circle on the camshaft [FIG. 2] (2-
2), or an elliptical cam composed of circles and tangents of circles [Fig. 2] (2-1) when the cylinder is in the intake state, the intake side cam operates, and when it is in the exhaust state, the exhaust side The cam of will be activated. The cam is not operating during compression and explosion. A new elliptical cam [Fig. 2] (U) or (E) smaller than the normal elliptical portion is newly installed on the 180 degree side of the elliptical portion such as the normal cam [Fig. 2] (A) or (I). , This new cam is mechanically or hydraulically sucked by the new cam of the intake side cam when the cylinder is in an explosive state so that the engine can be braked smoothly when the foot is released from the accelerator and the coasting can be performed smoothly. A cam with a structure that can be taken in and out when needed from [Fig. 2] (a) and (i) so that a new cam on the exhaust side cam can be used to exhaust air when compressed. -The sliding surface for inserting and removing the new cam is composed of a cylindrical surface [Fig. 2] (Fig. 2), an elliptic cylinder, or a long cylindrical surface, and the new cam slides only in a certain direction.・ To prevent the new cam from slipping out of the cam shaft, the new cam pop-out prevention pin [Fig.3] (E) or [Fig.2]
(2-6) Prevent the pop-out by using the new pop-out prevention ring etc.・ When operating the new cam with hydraulic pressure, oil pressure is applied, so oil and pressure must not leak. Therefore, a compression ring and an oil ring may be used. -The above-mentioned cam is used to improve the fuel efficiency of cars with cylinders. 2. With the above-mentioned cam, in addition to improving fuel efficiency of the vehicle, automatic development of a mission vehicle without a clutch pedal and switching of power from hybrid vehicle motor running to engine running and engine running to motor running To use. If the clutch plate of [Fig. 6] is added to the cam described above, rotation transmission and power transmission can be performed more smoothly. Theory A normal car explodes the fuel in the engine and uses its energy as a driving force through clutches, missions, etc. This invention was made to smoothly switch between motor driving and engine driving. A powerful motor whose motor output is adjusted by the accelerator is used to transmit power only to the 1st gear and the back gear, and the car is driven to about 5km / h. At this time, the new cam described above is operated to eliminate the pressure inside the engine and allow the engine to rotate smoothly. When the vehicle speed exceeds 5 km / h, the fuel pump operates and the cam becomes a normal cam. Therefore, fuel flows to the place where the engine is running, power is generated, and the car moves. When the engine starts, the motor automatically stops or the electricity is stopped. When you release your foot from the accelerator and perform gear check, a new cam is activated and the engine stops at the moment when the gears of the mission mesh. When the gears mesh, the rotation of the mission is smooth because the engine has no pressure and the engine does not brake. In order to transmit more smoothly, first of all, the clutch device of [Fig. 6] that can transmit only the rotation of the mission to the engine is adopted, and when the power is generated in the engine, the engine side spindle and the mission side spindle are Connect with meshing teeth.
What has been stated so far is that when the accelerator is depressed during normal driving, the fuel pump operates and the cam is a normal cam. The fuel pump does not operate when you take your foot off the accelerator. In addition, the new cam operates and coasting is possible. The engine is running during coasting. If the motor and engine are rotating at the same speed by saying that the engine is running unless the car is moving and the gear is turned off, the connection between the two will go smoothly even if either power source is used. Therefore, it can be used for power switching of a hybrid vehicle.・ If you press the brake, the new cam will not operate and the normal engine brake will be applied. At this time, no fuel is used.