Honda C65 - Valve Timing Diagram; Camshaft Construction (Oil Passage); Cam Contour

3. dN DER HEAD
aus.
=-=e -e::s_ .. e::. -e- ~---::: ... ::c e~"" arm
~ - · -e ::::- :::e - ord er to
- .... e C ... 3- --==- - .... s· oe rot ated
· ~ -g ~::- :::- ·- e · heel is in
-a·< - · -e e= • cron case cover,
·= -:::c<er or- ~c, ce on the lifting slope
Cj g. 3 -34 )
_:: :- ·g a nd clo s in g of the va l ve is deter.
·-e ois on stro e and is timed to the
=-· ·:: · a· i on. During the in let cycle, the inlet
: :::oen ed and clos ed at the end of the inlet
79
-··-g he exhaust cycle, the some openi ng
::·:: .= :::-·-g sequen ce takes place with the exhaust
_ . . lr.e open ang le between the opening and
- • -.: s he same as the piston tr ave l, howe ve r,
Figure 3- 33. Camshaft construction (oil passage)
-- == · · ·s 'he same as the c ra nkshaft angular ro tat ion,
: exo ·essed in terms of angular ro tati on .
, -e" poin t "a" in the Fig. 3- 34 pa sses be yond
-:= roc< er arm, the ve rti ca l mo ve ment of the valve
c-~ses, and at a ce rtain point where the com lobe
· ::;:-es o a peak, the m ovement of the valve
• =· > dow n and comes to a h alt at point " b" on
e. ::am.
-
e t appet clearance is adju s ted when the rocker
·s at the exposed sectio n of the heel of the cam
::.:- een points "c" and "a". The heel of the cam
:- · e SS O and S65 differs from the o th er models in
· - ~ · ·i is co mparatively larger , .this is to decrease the
lo ad on the sl ippe r s urfa ce o n the r ocke r arm.
C50M
C65
C65 Yl
Top dead center
( T.O.C )
(B .O.C)
Bottom d ead center
Figure 3- 34. Ca m co nt our
S50
S65
Top dead cen ter
( T.D.C )
(B. D. C)
Bottom dead ce nter
Figure 3- 35 . \lai ve timing diagram
lift
Cam heigh t