JPS5958154A - Engine starting device - Google Patents

Abstract

PURPOSE:To reduce the frequency of use of an engine starter to enhance the durability thereof and to make a battery small, by attaching a flywheel onto a crankshaft which is adapted to be engaged to the latter by means of compressed gas in order to control stored energy. CONSTITUTION:Upon engine braking and engine idling, fuel injection devices 14 in the number of a half of all engine cylinders cut off the supply of fuel by a signal from a control device 26 and the associated engine cylinders are communicated to an exhaust pipe 20 through a three-way solenoid valve 17 in order to charge exhaust gas into an air-sump 21. When the control device 26 detects a rotational speed exceeding a predetermined rotational speed, the three-way solenoid valve 22 is opened to allow compressed air in the air-sump 21 to actuate a clutch 10 so that a crankshaft 8 and a flywheel 7 are engaged and rotated together. When the control device 26 detects a rotational speed less than the predetermined rotational speed, the three-way solenoid valve 22 is closed to discharge pressure in the clutch 10 to the atmosphere so that the flywheel 7 is released from the crankshaft 8 to rotate freely. When a restarting signal is delivered to the control device 26 after an engine 6 is stopped, the latter is restarted by the inertia torque of the flywheel 7 by means of the three-way solenoid valve 22 and the clutch 10 although a starter 2 is not operated.

Description

[Detailed description of the invention] This invention relates to an improvement in an engine starting device.

Conventionally, the type shown in FIG. 1 has rarely been used. In the figure, (1) is an internal combustion engine, (2) is a starter motor (starting motor) having a pinion (4) that is meshed with the internal combustion engine's link gear (3), and (5) is a starter motor ( 2) is a battery (storage battery) that constitutes the power supply device.

Next, the operation of L-synthetic acid will be explained. Battery (5
) energizes the starter motor (2).

The pinion (4) is engaged with the ring gear (3), and the rotational force of the starter motor (2) urges the ring gear (3) to rotate.

The internal combustion engine (1) is started.

The conventional device is as shown below, and it is necessary to energize the starter motor (2) every time the engine starts, and in the case of engines that are frequently stopped and started (economy run vehicles),
J has drawbacks such as premature wear of the starting device, especially the ring gear (3) and pinion (4), and severe battery consumption.
] That's it.

This invention was made in order to eliminate the drawbacks of the conventional technology as described above.A second energy storage flywheel is attached to the crankshaft, and a pneumatically actuated clutch converts the stored energy into engine starting energy. By doing so, we aim to provide something with the excellent effects described below.

Hereinafter, one embodiment of the present invention will be explained with reference to the drawings. In Fig. 2, (6) is internal combustion engine IS>1, (71
The bearing fin (9) is attached to the crank 1Illll (8).
A flywheel (11
is the air clutch device 6 δ) and the flywheel (7)
It constitutes a rotational force engagement/disengagement function between the crank offer (8) and the crank offer (8). G0 is a cylinder head showing an enlarged view of the − cylinder of the internal combustion engine (6), G2 is the intake valve, 0゛ is the intake cylinder, θX is the fuel injection device attached to the intake pipe (2), 0υ is the exhaust valve, QB is the exhaust pipe, α is the 3-way cut 1η air valve,
θ barrel is the exhaust pipe leading to the air, Ql is the reverse 1F valve connected to the electromagnetic three-way switching air valve a,
υ is an air tank, (A) is an electromagnetic three-way switching air valve, (A), (C), and (C) are vibes that connect the L devices, and c/A is a fuel injection device θ. Re, solenoid 30,000 tiJJ replacement valve 07) and? It is a control device that controls the lfJ minute air valve). Except for the two rules, the 74th structure is the same as the conventional device shown in FIG. 1, so the same symbols are used and the explanation thereof is omitted.

Next, the operation of the configuration described in L will be explained. In the same manner as shown in the conventional device shown in Fig. 1, the starter motor (2) is connected to the crankshaft (8) via the ring gear (3).
) is rotated and the internal combustion engine (6) is started. Gunport starting 6th, internal combustion engine (6) installed, 1st filter 1? Vehicle (
When the internal combustion engine (6) is idling, the engine lift device r1 (not shown) is activated.
A) In the belief U, the number of fuel of the golden cylinder's henchmen is 1 equipped W
H cuts off the fuel supply to the 1 exhaust pipe QQ, and the electromagnetic 30,000 needle air 90 is connected to the control device (G) and the exhaust pipe θG
A ventilation path is constructed from the internal combustion engine (0) to the bisophan, and the exhaust gas from the internal combustion engine (0) is filled into the air reservoir (2) via the back pressure valve (θ). When the engine exceeds a predetermined rotation speed, the control device K detects the rotation speed and 1v magnetic 30,000 switching air valve (2
) is opened, and the compressed air in the air reservoir (ffl+) is released, causing the latch device +l U (btt; Strength lI, flywheel +lz (7)
is rotated integrally with the inner furnace 14-seki (6). Internal combustion engine (
6) If the IJi constant rotational speed is lowered, the controller 1 detects this, closes the IJi magnetic three-way switching air switch, and releases the air clutch device 0 (th) air pressure to the atmosphere. death,
Fly 7j tail (7) and crank 1iIllI (
8) is disconnected, and the flywheel (7) is allowed to rotate freely. After the above, the internal combustion engine (6) is stopped and the start signal is input to the controls t111 and tG4 again.

The starter motor (2) does not operate, the n-round magneto switching air valve) operates, and the compacted air in the air reservoir 21) acts on the air clutch 41j'' ((In), causing the air clutch to fly. The engine is connected to the crankshaft (8), and the internal combustion engine is energized to start by the inertia I!u rolling force of the fly + j = □ I - In the above, when the internal combustion engine reaches a predetermined rotational speed.

Assuming that the air pressure in the air clutch is released to the atmosphere,
Reverse work 111 to give 1 constant rotational speed -) t: only when in the air clutch? P pressure flows in and releases the connection between the flywheel and crankshaft, re-drawing 1riIJIT''f
Air J dry! JrJj Bi

In addition, in the IL description, the compressed air in the air reservoir Q0 causes the air '7 latch fe7. (Although the IQ was configured to operate, pneumatics was replaced with hydraulic pressure and the rear clutch machine (M
The connection bias of f is (°).

Furthermore, the air filled in the air reservoir &l) is compressed &'
zti! The width of the vehicle may be one δ according to the general formula No. 1.

As described above, according to the present invention, the crank liI+
The second flywheel is rotatable at t+ k- (r,,
Attach it to an internal combustion engine! A compressed air reservoir is provided which is filled with water.

Compressed air filled in the compressed air reservoir (which in turn connects the second flywheel and the internal combustion engine's 'l' shaft)
A clutch device is installed to detect internal combustion engine 0) (g) 1 medium T:, speed P (and store power +
q+ 1111+, the frequency of use of the scooter motor is reduced, and the durability of the starter motor is
W) and move towards 1.

The battery has become smaller and the reliability of the first mjJ 1^ has increased.
(Height of) Qin the effect that can be obtained.

[Brief explanation of drawings]

Fig. 1 is a configuration diagram of a conventional device, and Fig. 2 is a configuration diagram of an aircraft starting system according to an embodiment of Makoto's 1ul. (2) is the starter motor, (3) is the ring gear, (7) is the flywheel J. (8) is the crankshaft, Ql is the air crankshaft device,
θυ (Formula cylinder head, Q0 is air reservoir, (A) is control device W''''Q J). Note that in Figure 1, the same reference numerals indicate the same parts.

Claims (2)

[Claims] (1) A crankshaft for nine engines that has a first flywheel fixed to the crankshaft of the engine, a ring gear fixed to the first flywheel, and a starter motor meshingly engaged with the ring gear. The second flywheel is rotatably mounted on the ν axis, and the first flywheel and @2
An engine starting device characterized by comprising a connecting means using air pressure as an urging thrust to connect the flywheel of the engine. (2) The engine starting device according to claim 1, wherein the air pressure is based on an air reservoir pressure that accumulates exhaust gas compression pressure of a cylinder that cuts off fuel during deceleration of one engine.