帕金斯柴油發動機燃油泵、噴油器、濾清器燃油系統的談細參數與維修保養技術參數資料

perkins帕金斯3012柴油發動機燃油系統的組成
General description
一般描述
The fuel injection pump is a 12 element in-line unit
燃油噴射泵是一個12元列單元
driven at 0.5 x engine speed by the timing gears. It is
在0.5×發動機轉速的定時齒輪驅動。它是
fitted to a plate in the crankcase ’V’.
安裝在曲軸箱中的一個板上。
A constant s peed governor, integral with the fuel
恒速調速器，與燃料積分
injection pump, maintains engine speed through the
噴油泵，保持發動機轉速通過
engine load range. The stop control on the governor
發動機負荷范圍。總督的停止控制
is connected directly to a solenoid, which is actuated
直接連接到一個電磁線圈，這是致動的
by the stop button and the protection devices of the
通過停止按鈕和保護裝置
engine. A vernier control is connected to the lever of
發動機。游標控制連接到杠桿
the speed control for fine adjustment of engine speed.
發動機轉速精細調節的速度控制。
The end c overs on the ’CS’ governors are of variable
C端接管的CS的州長是可變的
designs, according to the application. Each cover
設計，根據應用。每個蓋
includes an assembly of a servo-valve and, where a
包括一個伺服閥組件，在那里
ramp is used which is not adjustable, the ramp is
坡道是使用，這是不可調，坡道是
fastened to the inner wall of the cover. Additional
系在蓋的內壁上。額外的
differences are the positions for the connections for
差異是連接的位置
the inlet (A1) and the outlet (A3) of the lubricating oil.
入口（A1）和出口（A3）的潤滑油。
Where necessary, a plug is fitted to give access for
在需要的地方，安裝一個插頭以使接入
the adjustment of the ramp (A2).
坡道的調整（A2）。
As seen from the rear of the engine, the shaft of the
從發動機的尾部看，軸的
fuel injection pump rotates anti-clockwise. The pump
噴油泵逆時針旋轉。泵
elements operate in the sequence given below:
在下面給出的序列中的元素：
1, 9, 4, 11, 2, 7, 6, 10, 3, 8, 5 and 12 at 30 degree
30，9，4，11，2，7，6，10，3，8，5，12，1
intervals, with No.7 element at the point of spill cutoff
間隔7元在泄漏截止點
(A6 injection).
（A6注射）。
The high-pressure fuel pipes are made from special
高壓燃料管是由特殊的
steel 8 mm diameter x 2 mm bore. Zinc plated nuts
鋼8毫米直徑2毫米口徑。鍍鋅螺母
and collars are fitted on both ends of each pipe. The
和衣領都裝在兩端的每個管道。這個
relevant cylinder number is stamped on the nut at the
有關汽缸編號是在螺母上加蓋
pump end of the pipe.
管道泵端。
The low-pressure system of fuel pipes is made from
燃油管的低壓系統是由
mild steel, with connections of union nuts and
輕微的鋼，與連接螺母和
sleeves.
袖子。
For early engines, the lift pump is driven by a cam on
對于早期的發動機，電梯泵是由凸輪驅動的
the rear end of the auxiliary drive shaft. On new
輔助驅動軸的后端。在新的
engines, the fuel lift pump is mounted at the front end
發動機，燃油泵安裝在前端
of the engine within the engine vee and is driven by
該發動機在發動機和驅動的V型
an additional cam lobe on the ’B’ bank camshaft. The
“乙”銀行凸輪軸上的凸輪軸。這個
lift pump draws fuel through a primary filter from the
提升泵從所用的主過濾器中抽油
fuel tank before directing it through two filter canisters
燃料箱前引導它通過兩個過濾罐
to the gallery of the fuel injection pump.
燃油噴射泵的圖庫。

Two low-pressure relief valves (A1) are fitted on the
body of the fuel injection pump. They keep a constant
pressure of 90 to 117 kN/m  (13 to 17 lbf/in ) in the
fuel supply to the gallery of the pump and allow the
surplus fuel to return to the fuel tank. Fuel enters the
elements of the fuel injection pump and is sent at high
pressure, by the elements, to the 12 ’low s pring’ type
of fuel injectors.  The fuel injectors are set to operate
at 243 bar (240 atmospheres).
Early  engines are fitted with Bosch or OMAP fuel
injectors.  New engines are fitted with composite
rocker covers and these have Stanadyne fuel
injectors, as shown (B).
These fuel injectors are longer than the other types to
allow the leak-off banjo connections to be fitted
directly to the bodies of the fuel injec tors above the
composite rocker covers.  Other details are generally
similar to the Bosch and the OMAP fuel injectors.
From the leak-off banjo connections a system of pipes
directs the leak-off fuel to a connection block where it
mixes with the spill fuel and the surplus fuel from the
fuel injection pump. It is then returned to the fuel tank.
The connection block has a vent plug for the low-
pressure fuel system.  For new engines the
connection block is part of the fuel filter head.
Clean thoroughly each component, and the area
around it, before it is dismantled or removed.
Fit suitable caps and plugs to all of the unions
immediately after they have been dis connected.
Components must be absolutely  clean and kept
safely until they are used during the maintenance or
the overhaul of the fuel system.

如何清洗帕金斯柴油初級燃油濾清器

Primary fuel filter
How to clean the primary fuel filter
1  Remove the three bolts (A1) and remove the filter
bowl (A2).
2  Clean all of the components  with paraffin and dry
them with a compressed air jet.
3  Fit the bowl to the filter head, together with a new
sealing ring.  Align the clamp ring (A3) and fasten it
with the three bolts.
Early engines can be fitted with filters  which have
elements that can be cleaned.  These elements
should be removed, cleaned with fuel oil and dried
with a compressed air jet.
Fuel filter canisters
How to renew the canisters
of the main fuel filter
On new engines the main fuel filter is fitted at the rear
of the engine on the ‘A’ bank side.  For early engines
it is fitted to the 'B' bank side, against the cover of the
coolant gallery as shown (B).  The filter has two
disposable canisters.  Both canisters must be
renewed at the same time.
1 Clean the area around the filter and remove the fuel
filter canis ters.  If neces sary, use a strap wrench.
Discard the canisters.
2 Check that the sealing ring (B1) is fitted correctly to
each new canister and clean the contact faces of the
filter head.
3 Lubricate the top of the canister seal (B1) with clean
fuel oil and renew the sealing ring (B2) on the adaptor.
4 Fit the new canisters to their threaded adaptors and
tighten each canister until the sealing ring just comes
into contact with the filter head.  Continue to tighten
overtighten.
After the fuel filter canisters have been renewed,
eliminate air from the low pressure fuel system as
given in operation 20-16.

Fuel filter head

The fuel filter head is fitted at the rear of the engine

on the ’A’ bank side.  For early engines the fuel filter

head is fitted to the ’B’ bank side, against the cover of

the coolant gallery.

To remove

1  Remov e the two fuel filter canisters.

Caution: Do NOT bend any of the fuel pipes.

2 Disconnect the fuel leak-off pipes from the fuel filter

head.  Remove the pipes if relevant to the job.

3  Disconnect the three low pres sure fuel pipes from

the fuel filter head.  Remove the pipes if relevant to

the job.

4  Hold the fuel filter head and remove the two bolts

and nuts.  Withdraw the bolts and collect the spacers

and washers.

To fit

1  Fit the fuel filter head to the air filter bracket and

retain it with the two bolts and nuts complete with

spacers and plain and spring washers.  The spacers

must be fitted between the fuel filter head and the air

filter bracket.  Tighten the nuts to a torque of 23 Nm

(17 lbf ft).

2  Fit the three low pressure fuel pipes.  Use new

copper sealing washers.

3 Fit the fuel leak-off pipes.  Use new copper sealing

washers.

4 Fit the two fuel filter canisters, see operation 20-2.

5  Eliminate air from the low pressure fuel system as

given in operation 20-16.