JP3261313B2 - Engine rotation detector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an engine rotation detecting device provided with a detected portion provided on a rotating shaft of an engine and a sensor for detecting the position of the detected portion.

[0002]

2. Description of the Related Art As a detection device for detecting the crank angle of an engine, a detection device is provided on a camshaft that rotates in conjunction with a crankshaft, and a sensor provided on a cylinder head is opposed to the detection device. , JP 62
-96860.

[0003]

In the above-mentioned conventional apparatus, since the sensor is covered by a cover member (belt cover) mounted on the cylinder head, it is necessary to remove the cover member during maintenance of the sensor. Not only is it troublesome, but also because the sensor is attached to the cylinder head below the camshaft, there is a problem that the workability deteriorates.

The present invention has been made in view of the above circumstances, and has as its object to improve the maintainability of a sensor of an engine rotation detecting device.

[0005]

To achieve the above object of the Invention The invention of Claim 1, toward the crankshaft in the lateral direction of the vehicle body is disposed below the hood inclined the engine to the front side of the vehicle body is lowered , Front of cylinder head
Connect the intake manifold to the
The sensor is attached from the outside to the front of a head cover that covers the cylinder head from above , so that workers can easily reach the sensor and the head cover is removed from the engine. Only the sensor can be removed from the head cover without removing it, improving maintainability. In addition, the sensor can be prevented from interfering with the hood, so that the position of the hood can be lowered, and the sensor can be effectively cooled by running wind. Even if a sensor is mounted near the cylinder head on the front of the head cover, the intake manifold, which is lower in temperature than the exhaust manifold, is provided on the front of the cylinder head. Can be.

[0006] The invention of claim 2 is based on the invention of claim 1.
In addition to the above features, the sensor may be a sensor on the intake cam side.
The exhaust cover is located on the upper surface of the rear part of the head cover.
The sensor on the system side is supported.
To minimize the gap between the head cover and the bonnet
While interfering with the sensor on the exhaust cam and the bonnet.
Hood and the position of the hood can be lowered.

According to a third aspect of the present invention , the front side of the vehicle body is low.
Engine at the bottom of the hood, which is inclined
The rank shaft points in the vehicle longitudinal direction and its axis is
Arrange so that it is inclined downward, and raise the cylinder head upward.
Take the sensor from the outside at the back of the
The invention according to claim 4 is characterized in that the vehicle body front
At the bottom of the hood, which is inclined so that
The gin so that the crankshaft faces the front and back of the vehicle
The cylinder head is arranged so as to be inclined,
Cover the top of the head cover that covers the
The sensor is attached from the outside.

[0008] According to the above features of the invention of claims 3 and 4,
The engine is located at the bottom of the hood, which is inclined so that the front side of the vehicle body is lower. The crankshaft faces the front and rear of the vehicle, and the sensor is attached to the rear of the head cover from the outside. Of course, since only the sensor can be removed from the head cover without removing the head cover from the engine, maintenance is improved. Moreover, the position of the hood can be lowered by preventing the sensor from interfering with the hood.

[0009] In particular, in the invention of claim 3, the bonnet
Is tilted downward and the axis of the crankshaft is downward
Because of the slant, the sensor
Sufficient clearance between the rear of the head cover and the underside of the hood.
Time is secured.

[0010] In particular, in the invention according to claim 4, the engine is provided.
Since the cylinder head is arranged to be inclined,
A sensor mounted on the back of the bar and inclined forward
A space between the hood and the hood can be secured.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described based on embodiments of the present invention shown in the accompanying drawings.

1 to 9 show a first embodiment of the present invention. FIG. 1 is a side view of a front portion of a vehicle body, FIG. 2 is a view in the direction of arrow 2 in FIG. 1, and FIG. FIG. 4 is a plan view showing the cylinder head with the head cover removed, FIG. 4 is an enlarged view of a main part of FIG. 3, FIG. 5 is a sectional view taken along line 5-5 of FIG. 4, FIG. 4 is a sectional view taken along line 7-7 of FIG. 4, FIG. 8 is an enlarged sectional view taken along line 8-8 of FIG. 4, and FIG. 9 is an enlarged sectional view taken along line 9-9 of FIG.

As shown in FIGS. 1 and 2, an in-line four-cylinder engine E mounted on a front part of a front engine / front drive vehicle has a crankshaft S oriented in the left-right direction of the vehicle, a cylinder head 1 and a cylinder head. The block 2 is disposed so as to tilt backward. An intake manifold 12 is provided on the front and rear surfaces of the cylinder head 1, respectively.
And the exhaust manifold 13 are connected.

FIG. 3 is a plan view showing a state where the head cover of the engine E has been removed. In a state where the engine E is mounted, the arrow FR side is the front side (intake side) and the arrow R side is
The R side is the rear side (exhaust side). Around the upper surface of the cylinder head 1 lower surface of the head cover is coupled and the head cover coupling surface 1 ₁ is formed, the timing chain chamber 1 ₂ formed so as to penetrate vertically on one side (the right side of the vehicle body) And a timing chain 3 for transmitting the rotation of the crankshaft S to the valve train. Cylinder head so as to protrude in the timing chain chamber 1 in ₂ 1
A chain sprocket 5 is supported by an intermediate shaft 4 provided at the upper end of the timing chain 3. The upper end of the timing chain 3 meshes with the chain sprocket 5.

The cylinder head 1 has an intake camshaft 6
i and the exhaust camshaft 6e are supported in parallel,
Followed helical gears 7i, 7e provided at their right ends
Meshes with the drive helical gear 8 supported on the intermediate shaft 4. As a result, the rotation of the crankshaft S is transmitted to the intake camshaft 6i and the exhaust camshaft 6e via the timing chain 3, the driving helical gear 8, and the driven helical gears 7i and 7e.
i, 6e are driven at half the number of revolutions of the crankshaft S.

On the upper surface of the cylinder head 1, five lower camshaft holders 9 _{1 to} 95 of # 1 to # ₅ are arranged side by side from the right side of the vehicle body to the left side. total penetrating the holder assembly 10 and the five lower cam shaft holders 9 ₁ to 9 ₅ 20
By screwing this bolt 11 ₁ to 11 ₂₀ to an upper surface of the cylinder head 1, the intake between the lower cam shaft holder 9 _to 93 ₅ and the upper camshaft holder 10 which is fastened to the cylinder head 1 camshaft 6i and an exhaust The camshaft 6e is rotatably supported.

Upper camshaft holder assembly 10
Five upper cam shaft holder which are coupled to the upper surface of the five lower cam shaft holders 9 ₁ to 9 ₅ 10 ₁
And 10 _5, those five upper cam shaft holders 10 ₁ to 10 ₅ to four binding together connecting portion 10 ₆
…. Spark plug guide 10 ₇ for the upper surface of each connecting portion 10 ₆ attaching and detaching the spark plug (not shown)
And reinforcing ribs 10 ₈ formed to intersect in an X-shape,
10 ₈ are provided. Wherein X-shaped reinforcing ribs 10 _8, 1
0 _8, the cam shaft 6i, bolts 11 ₂ ten located inwardly of 6o of said 20 bolts 11 ₁ to 11 _20, 11 _3, 11 _6, 11 _7, 11 _10, 11 _11, 1
1 _14, 11 _15, 11 _18, 11 since the ₁₉ fastening portion to be connected to a spark plug guide 10 _7, while securing the removable space of the spark plug, to significantly improve the rigidity of the connecting portion 10 ₆ Can be.

Each upper camshaft holder 10
The upper surface of _{one to 105} reinforcing ribs ₁₀₉ extending in a direction perpendicular to the axis of the intake camshaft 6i and the exhaust camshaft 6e is provided. The reinforcing ribs 10 _8, 10 ₈ and the reinforcing ribs 10 _9, the cam shaft 6i, the support rigidity of 6o is greatly improved.

4 to 6, the cylinder head 1 is provided with an intake port 15i and an exhaust port 15e corresponding to each cylinder.
Valve holes 16i, 16i connected to the intake port 15i and the exhaust port 15e; 16e, 16e respectively form a pair of intake valves 17i, 17i and an exhaust valve 17e, 17e.
It is opened and closed by. The intake valves 17i, 17i and the exhaust valves 17e, 17e are respectively provided with a valve spring 1
8i, 18i; 18e, 18e are urged in the valve closing direction.

Five lower camshaft holders 9 _{1 to} 9
₅ supports an intake rocker shaft 19i and an exhaust rocker shaft 19e. Intake rocker shaft 19i
The other ends of a pair of intake rocker arms 20i, 20i rotatably supported at one end contact the stem ends of the intake valves 17i, 17i, and one pair rotatably supported at one end by an exhaust rocker shaft 19e. The other end of the exhaust rocker arms 20e, 20e is connected to the exhaust valve 17e,
Contact the stem end of 17e. Rollers 21i, 21i provided between the low-speed intake rocker arms 20i, 20i abut against low-speed cams 22i, 22i provided on the intake camshaft 6i, and are provided between the low-speed exhaust rocker arms 20e, 20e. The provided rollers 21e, 21e abut against the low speed cams 22e, 22e provided on the exhaust camshaft 6e.

FIG. 6 shows an exhaust-side valve operating mechanism including the exhaust rocker shaft 19e. As can be seen from the drawing, a high-speed exhaust rocker arm 23e is rotatably supported on the exhaust rocker shaft 19e so as to be sandwiched between the pair of low-speed exhaust rocker arms 20e, 20e. The arm 23e comes into contact with a high-speed cam 24e provided on the exhaust camshaft 6e.
The high-speed exhaust rocker arm 23e and the low-speed exhaust rocker arm 20e, 20e can be mutually coupled and decoupled by a variable valve timing / lift mechanism 25. The structure of the variable valve timing / lift mechanism 25 is known, and will not be described in detail here. Further, the structure of the valve mechanism on the intake side is also substantially the same as the above-described valve mechanism on the exhaust side.

During high-speed operation of the engine E, the high-speed rocker arms 23i and 23e are moved by the variable valve timing / lift mechanism 25.
i, 20i; 20e, 20e, and the intake valve 1
7i, 17i and the exhaust valves 17e, 17e are driven by the profiles of the high-speed cams 24i, 24e. When the engine E is running at a low speed, the high-speed rocker arm 23i,
23e is a low-speed rocker arm 20i, 20i;
e, 20e and the intake valves 17i, 17
i; and the exhaust valves 17e, 17e
i, 22i; driven by the profiles of 22e, 22e.

As shown in FIGS. 4, 6 and 7, a first thrust regulating member 31i, 31e and a second thrust regulating member 32i, 32e are provided at the left shaft end of the intake camshaft 6i and the exhaust camshaft 6e. Provided. The first thrust regulating members 31i and 31e are disk-shaped members and are formed integrally with the intake camshaft 6i and the exhaust camshaft 6e. On the other hand, the second thrust regulating members 32i, 32e
Are three detection projections 33i...
3e ... a schematic disk-shaped member having a intake cam step portion ₆₁ of the shaft end of the shaft 6i and an exhaust cam shaft 6e, 6 ₁ fits (see FIGS. 6 and 7), and the locating pins 34 , 34, and are fixed by bolts 35, 35 while being positioned in the rotational direction.

A TDC (top dead center) sensor 37i for detecting three detected protrusions 33i of the second thrust regulating member 32i on the intake camshaft 6i side is provided on a head cover 36 connected to the upper surface of the cylinder head 1. And 3 of the second thrust regulating member 32e on the exhaust camshaft 6e side.
TDC sensor 37 for detecting the number of detected protrusions 33e.
e are fixed by bolts 38, 38, respectively. Thereby, each of the two second thrust regulating members 32i and 32e is
The passage of the detected protrusions 33i, 33e is detected by the TDC sensors 37i, 37e, and the TDC of the four cylinders can be detected based on the timing.
The TDC sensors 37i and 37e and the head cover 36
It is desirable to mount O-rings 40, 40 between them.

The TDC sensors 37i and 37e can be detached from the outside of the head cover 36 by operating the bolts 38 while the head cover 36 is attached to the cylinder head 1.

As is clear from FIG. 7, the bonnet 39 covering the upper part of the engine E is inclined forward and downward so that the front side (intake side) is low and the rear side (exhaust side) is high. TDC sensor 3 on intake camshaft 6i side
7i is supported substantially horizontally on the front surface of the head cover 36, and the TDC sensor 37e on the exhaust camshaft 6e side is supported substantially vertically on the rear upper surface of the head cover 36, thereby minimizing the gap between the head cover 36 and the bonnet 39. TDC sensors 37i, 37e and bonnet 3
9 can be avoided, and the position of the hood 39 can be lowered.

[0027] As apparent from FIG. 6, # 5 lower cam shaft holder 9 ₅ and the intake camshaft 6i and the exhaust camshaft on the inner surface of the upper cam shaft holder 10 ₅ coupled thereto (the right side in FIG. 6) 6
e, the first thrust load supporting surfaces 46, 4
6; 48, 48 are formed, and the first thrust regulating members 31i, 31e are in sliding contact with the first thrust load supporting surfaces 46, 46; 48, 48. The # 5 lower cam shaft holder 9 ₅ and the upper camshaft holder 10 ₅ of the outer surface intake camshaft 6i and the exhaust camshafts (the left side in FIG. 6) coupled thereto 6
e, the second thrust load supporting surfaces 47, 4
7; 49, 49 are formed, and the second thrust regulating members 32i, 32e are in sliding contact with the second thrust load supporting surfaces 47, 47; 49, 49.

Thus, when the intake camshaft 6i and the exhaust camshaft 6e receive a thrust load due to the meshing of the driving helical gear 8 and the driven helical gears 7i, 7e, the first thrust regulating members 31i, 31e and the # 5 lower camshaft holder. 9 ₅ and # 5 inner surface of the upper cam shaft holder 10 ₅ first thrust load supporting surfaces formed on the surface (right side surface in FIG. 6) 46, 46; 48, 48
(See FIG. 5), or the second thrust regulating members 32i, 32e and the # 5 lower camshaft holder 9
₅ and the # 5 upper camshaft holder 10 ₅ are brought into contact with the second thrust load supporting surfaces 47, 47; 49, 49 (see FIG. 7) formed on the outer surface (the left side surface in FIG. 6). Is supported by both camshafts 6
The movement of i, 6e in the axial direction is restricted.

At this time, the TDC sensors 37i, 37e
.., 33e.
Since it is formed on the outer periphery of the thrust regulating members 32i and 32e, it is not necessary to provide a special rotating plate having a detected projection, and the number of parts is reduced. Moreover, the detected thrusts 33i..., 33 are provided on the second thrust restricting members 32i, 32e for restricting the axial movement of the camshafts 6i, 6e.
are provided to minimize the axial fluctuation of the detected protrusions 33i, 33e due to the thermal expansion of the two camshafts 6i, 6e, and to minimize the TDC sensors 37i, 3e.
7e can be prevented from lowering in detection accuracy. Furthermore, # 5 lower cam shaft holder 9 ₅ thrust load supporting surfaces adjacent to the camshaft supporting part of the 46, 46; 4
7, 47, the detected protrusions 33i,.
The rotation fluctuation of the TDC sensor 3 is more effectively prevented.
The detection accuracy of 7i and 37e can be improved.

As shown in FIGS. 5 to 7, the head cover 3 is provided to prevent noise during operation of the engine E.
6 is floatingly supported through an elastic member 14 in contact with the head cover coupling surface 1 ₁ of the cylinder head 1. When the head cover 36 is floating supported on the cylinder head 1 in this manner, the head cover 36
The positions of the TDC sensors 37i, 37e supported by the first and second thrust regulating members 32i, 32e may not be determined, and the relative position between the second thrust regulating members 32i, 32e and the detected protrusions 33i, 33e may change, thereby lowering the detection accuracy. is there. Therefore, among the 20 bolts 11 ₁ to 11 ₂₀ for coupling the upper cam shaft holder 10 ₁ to 10 ₅ lower cam shaft holder 9 _to 93 ₅ in the present embodiment, five bolts 11 _2, 1
Use 1 _8, 11 _9, 11 _16, 11 ₁₈ (see FIG. 3) thereby achieving the positioning of the head cover 36.

[0031] FIG. 8 is the head cover by a bolt 11 ₂ 3
Shows the fixing structure 6, other one bolt 11 ₁₈ also has the same structure. Extension shaft portion extending from the bolt 11 ₂ upwards 50 extends through a gap in the outer periphery of the central recess 36 ₁ frustoconical shape formed in the head cover 36, the rubber bushing 51 and washer 52 to the upper end nut 53 is screwed onto the male threaded portion 50 ₁ in a state fitted with. Rubber bushing 51 has a truncated cone shape that tapers downwards, the tapered surface is pressed against one another by tightening force of the nut 53 in close contact with the recess 36 _1. The bolt 11 is in the _second shaft portion 54 the upper end and the positioning portion 54 ₁ of the precision machined circular cross section is formed, the positioning portion 55 of the precision machined circular cross-section the positioning face 54 ₁ to the upper end of the bolt holes 55 _It fits into ₁ without gap.

[0032] FIG. 9 is the head cover by a bolt 11 ₈ 3
6 shows the fixing structure of the other two bolts 11 ₉ ,
11 ₁₆ also has the same structure. As is apparent from a comparison of FIGS. 8 and 9, the fixing structure of the head cover 36 by bolts 11 _8, except that no positioning structure by the positioning surfaces 54 _1, 55 _1, the head cover 36 by the bolts 11 ₂ It is the same as the fixed structure.

As described above, the head cover 36 is attached to the cylinder head 1 by the bolts 11 ₂ , 11 ₈ , 11 ₉ , 11 ₁₆ , 11
_{Since the} rubber bushes 51 are interposed at the time of fixing at ₁₈ , the noise can be reduced by interrupting the transmission of vibration to the head cover 36, and the tapered surface of the rubber bushes 51 is tapered to the concave portions 36 ₁ . Since the head cover 36 is in close contact with the surface, the head cover 36 can be prevented from being displaced by its centering function. At this time, two bolts 1 at both ends
1 _2, 11 because ₁₈ is precisely positioned by the action of the positioning faces 54 _1, 55 _1, it is possible to further enhance the accuracy of the relative position of the head cover 36 to the cylinder head 1.

As a result, the TDC sensors 37i, 37e supported by the head cover 36 and the detected protrusions 33i,..., 33 of the second thrust regulating members 32i, 32e are reduced while the head cover 36 is floatingly supported to reduce noise.
e), the accuracy of the relative position between them can be ensured, and a decrease in the detection accuracy can be prevented.

As is clear from FIG. 7, the TDC sensors 37i and 37e are directly attached to the head cover 36 located at the uppermost part of the engine E from the outside. Not only can the bolts 38 be loosened simply by loosening the bolts 38, 38, but also the operator can easily reach and the working posture is easy, so that the maintainability is greatly improved. Moreover, since the TDC sensors 37i and 37e are directly mounted on the head cover 36 without using a mounting bracket or the like, there is no increase in the number of components, an increase in cost, and a decrease in mounting position accuracy. Further, the connecting surface between the cylinder head 1 and the head cover 36 is a camshaft 6i,
6e, the TDC sensor 37i is mounted on the side of the camshaft 6i of the head cover 36, that is, at a position above the coupling surface.
Not only can the mounting position be easily secured, but also the mounting structure can be simplified.

As is apparent from FIG. 1, the engine E is mounted so that the cylinder block 2 and the cylinder head 1 are slightly inclined backward with respect to the vertical direction, and the bonnet 39 is lowered on the front side of the vehicle body. So inclined. Therefore, the TDC provided on the front of the head cover 36
The sensor 37i and the TDC sensor 37e provided on the rear upper surface of the head cover 36 hardly interfere with the lower surface of the bonnet 39, whereby the position of the bonnet 39 can be lowered. Moreover, the TDC sensors 37i and 37e
Is located high in the engine room,
In addition to making it difficult for mud and dust to adhere, the cylinder head 1
And the durability is improved.

Further, the TDC sensor 37i on the front side
The cylinder is located closer to the cylinder head 1 than the TDC sensor 37e on the rear side, so that it is more susceptible to thermal effects. However, the intake manifold 12 which is lower in temperature than the exhaust manifold 13 is arranged on the front side of the cylinder head 1. In addition, since it is easy to receive the traveling wind, the thermal influence can be reduced.

Next, a second embodiment of the present invention will be described with reference to FIGS.

In the second embodiment, the present invention relates to a front engine
The in-line four-cylinder engine E mounted on the front part of the vehicle is substantially the same as that of the first embodiment except that the crankshaft S is oriented in the longitudinal direction of the vehicle. Further, the cylinder head 1 and the cylinder block 2 are arranged so as to be slightly inclined to the right side of the vehicle body. Therefore, in the first embodiment, the head cover 36
TDC sensor 37 located at the left end of the vehicle body
In the second embodiment, i and 37e are arranged at the rear end of the head cover 36 on the vehicle body.

Since the hood 39 is inclined forward and the axis of the crankshaft S of the engine E is inclined backward and downward, the TDC sensors 37i and 37
A sufficient space is secured between the rear of the head cover 36 to which e is attached and the lower surface of the bonnet 39. Thus, the TDC sensors 37i and 37e can be utilized by using the space without particularly increasing the position of the hood 39.
Can be arranged. Further, the TDC sensor 37e on the right side of the vehicle body is likely to interfere with the bonnet 39 because it is provided on the upper surface of the head cover 36 instead of the side surface thereof, but the engine E is arranged with the cylinder head 1 and the cylinder block 2 inclined to the right side of the vehicle body. Therefore, the TDC sensor 37 provided on the upper right side of the upper surface of the head cover 36
A space between e and the hood 39 can be secured.

Although the embodiments of the present invention have been described in detail, various design changes can be made in the present invention without departing from the gist thereof.

For example, in the embodiment, the TDC sensor 37
Although i and 37e are attached to the head cover 36, they can be attached to other cover members such as a timing chain cover. The engine rotation detecting device according to the first aspect is not limited to the rotation position (phase) detection of the camshafts 6i and 6e described in the embodiment.
The present invention can also be applied to the detection of the rotational position, rotational angle, and rotational speed of the camshafts 6i, 6e and other rotating shafts (such as crankshafts) of the engine.

[0043]

As it is evident from the foregoing description, according to the inventions of claims 1, to place the crankshaft in the lower part of the inclined hood to the engine front side of the vehicle body becomes lower toward the lateral direction of the vehicle body, the cylinder head Connect the intake manifold to the front and the exhaust manifold to the rear,
The sensor is attached from the outside to the front of the head cover that covers the cylinder head from above, making it easier for workers to reach the sensor, improving maintainability and removing the sensor without removing the head cover from the engine. And maintainability is improved. Further, since the sensor is less likely to interfere with the hood, the position of the hood can be lowered. Even if the sensor is mounted on the front of the head cover close to the high-temperature cylinder head, the thermal effect on the sensor is reduced because the front of the cylinder head has a low-temperature intake manifold compared to the exhaust manifold. And the sensor is attached to the front of the head cover, so that the cooling effect of the sensor by the traveling wind is improved.

According to each of the third and fourth aspects of the present invention, the engine cover is provided with a crankshaft disposed below the bonnet inclined so that the front side of the vehicle body becomes lower in the front-rear direction of the vehicle body to cover the cylinder head from above. The sensor is attached to the rear of the sensor from the outside, making it easier for workers to reach the sensor and improving maintenance. In addition, it is possible to remove only the sensor without removing the head cover from the engine, improving maintenance. I do. Further, since the sensor is less likely to interfere with the hood, the position of the hood can be lowered.

Also, in particular, in the invention of claim 3, the bonnet
Is tilted downward and the axis of the crankshaft is downward
Because of the slant, the sensor
Sufficient clearance between the rear of the head cover and the underside of the hood.
Time is secured.

In particular, in the invention of claim 4, the engine is
Since the cylinder head is arranged to be inclined,
A sensor mounted on the back of the bar and inclined forward
A space between the hood and the hood can be secured.

[Brief description of the drawings]

FIG. 1 is a side view of a front part of a vehicle body of an automobile.

FIG. 2 is a view in the direction of arrows in FIG. 1;

FIG. 3 is a plan view showing a cylinder head of the in-line four-cylinder engine with a head cover removed.

FIG. 4 is an enlarged view of a main part of FIG. 3;

FIG. 5 is a sectional view taken along line 5-5 of FIG. 4;

FIG. 6 is a sectional view taken along line 6-6 in FIG. 4;

FIG. 7 is a sectional view taken along line 7-7 of FIG. 4;

8 is an enlarged sectional view taken along line 8-8 of FIG. 4;

FIG. 9 is an enlarged sectional view taken along line 9-9 of FIG. 4;

FIG. 10 is a side view of a front portion of a vehicle body of an automobile according to a second embodiment of the present invention.

FIG. 11 is a view taken in the direction of arrow 11-11 in FIG. 10;

[Explanation of symbols]

 E Engine S Crankshaft 1 Cylinder head 6i Intake camshaft (rotating shaft) 6e Exhaust camshaft (rotating shaft) 12 Intake manifold 13 Exhaust manifold 33i Projection to be detected (detected portion) 33e Projection to be detected (detected portion) 36 Head cover (Cover member) 37i TDC sensor (sensor) 37e TDC sensor (sensor) 39 Bonnet

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-6-229256 (JP, A) JP-A-60-192879 (JP, A) JP-A-62-2969 (JP, U) JP-A-6-3969 (JP, U) 69656 (JP, U) Fully open 1987-47773 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) F02P 7/067 F01L 1/04 F01L 1/46 F02D 35/00 F02F 7/00

Claims (4)

(57) [Claims] With the detected portion provided on the camshaft (6i) of claim 1 an engine mounted on the vehicle body (E) and (33i), and a sensor for detecting the position of該被detector (33i) (37i) In the engine rotation detecting device, a crankshaft (S) is disposed below a bonnet (39) inclined so that the front side of the vehicle body is lowered, and the crankshaft (S) is directed in the lateral direction of the vehicle body. An intake manifold (12) is connected to the front of the cylinder, and an exhaust manifold (13) is connected to the rear of the cylinder. The head cover (3) covers the cylinder head (1) from above.
Characterized in that the sensor of (37i) mounted from the outside to the front of 6), the rotation detecting device of an engine. 2. The sensor (37i) is provided on the intake cam side.
A sensor, and a rear part of the head cover (36).
The engine rotation detecting device according to claim 1, wherein a sensor (37e) on an exhaust cam side is supported on an upper surface. 3. A detected part (33i, 33e) provided on a camshaft (6i, 6e) of an engine (E) mounted on a vehicle body.
and e),該被detector (33i, the position detection for sensor (37i of 33e), in the rotation detecting device for an engine that includes a 37e), bonnet car body front side is inclined to become low (3
Said engine (E) at the bottom of 9), a crankshaft (S) In recent direction of the vehicle body front-rear direction and to the axis trailing edge
The sensor (3) is disposed at the rear of the head cover (36) which is disposed so as to cover the cylinder head (1) from above.
7i, 37e) is attached from the outside. The detected portion provided on the cam shaft (6 e) of claim 4 engine mounted on a vehicle body (E) and (33 e), to detect the position of the該被detector (33 e) sensor (37 e) In a rotation detection device for an engine equipped with a bonnet (3), the hood (3
9) The engine (E) is located below the crankshaft.
(S) faces the vehicle longitudinal direction and the cylinder head
(1) The cylinder head is arranged so as to be inclined.
Rear upper surface of head cover (36) that covers (1) from above
Characterized in that the sensor and (37 e) mounted from the outside, the rotation detecting device of an engine.