CN1614200A

CN1614200A - Timing gear installing method for engjine

Info

Publication number: CN1614200A
Application number: CN 200410081409
Authority: CN
Inventors: 李志祥; 陈浩; 成卫国; 向以轩
Original assignee: Changan Automobile Group Co Ltd
Current assignee: Chongqing Changan Automobile Co Ltd
Priority date: 2004-12-03
Filing date: 2004-12-03
Publication date: 2005-05-11
Anticipated expiration: 2024-12-03
Also published as: CN100441834C

Abstract

A method for installing the clockwise gear train of engine includes such steps as determining the position of the cam axle relative to the top stop point of the first cylinder, clamping it by a locating plate, inserting the locating pins in the locating holes on flywheel and cylinder, installing the chockwise belt wheels to crankshaft and can axle, turning their screw bolts tightly, installing clockwise belt, idle wheel and tension wheel, regulating the tension of belt, turning the screw bolt of tension wheel tightly, fastening the connecting screw bolt between belt wheel and cam axle, and removing locating plate and pin.

Description

Timing gear installing method for engjine

Technical field

The invention belongs to motor car engine mounting technology field, be specifically related to motor when assembling location and fastening timing gear installing method for engjine of timing train bent axle, camshaft.

Background technique

Available engine timing train is installed and had following shortcoming: traditional timing train is installed by naked eyes alignment timing marks error bigger; Because of Timing Belt moves is multiple quantitative changeization with tooth, since the camshaft timing belt pulley with adopted locating stud (each Timing Belt wheel location is fixing) being connected of camshaft, the installation of timing train is by naked eyes alignment timing marks, the foozle of each component in addition, the belt pulley distance can not just be the integral multiple of Timing Belt tooth pitch, thereby cause Timing Belt that slack is arranged, thereby the accurate timing phase of location engine cause Timing Belt assembling difficulty simultaneously.

Summary of the invention

The objective of the invention is to the problem that exists is installed, a kind of timing gear installing method for engjine is provided, improve the setting accuracy of engine timing phase place, and it is more convenient that the timing train is installed at available engine timing train.

Technical solution of the present invention is: when motor assembles, determine that the location employing locating clamp plate of camshaft when the first cylinder top dead center blocks the location side on the camshaft; Bent axle Timing Belt wheel adopts locating stud and bolton with being connected of bent axle, determines the location employing locating stud of bent axle when the first cylinder top dead center, injects the positioning pin hole location on flywheel and the cylinder body; Behind the first cylinder top dead center camshaft, bent axle location, load onto bent axle Timing Belt wheel and camshaft timing belt pulley, the camshaft timing belt pulley adopts bolt with being connected of camshaft, does not tighten earlier, locating stud and bolt are adopted in being connected of bent axle Timing Belt wheel and bent axle, and bolt is tightened; Refill Timing Belt, idle pulley and Idle wheel, regulate the degree of tightness of Timing Belt, and tighten the Idle wheel bolt with Idle wheel; Move with Timing Belt and rotate at tensioning Timing Belt process convexity wheel shaft Timing Belt wheel, the Timing Belt each several part obtains tensioning.The connecting bolt of fastening camshaft timing belt pulley and camshaft takes off locating clamp plate and locating stud then, finishes the timing train and installs.

This timing gear installing method for engjine applies to motor and assembles its advantage and be:

1) this engine timing train is installed because of just tightening the connecting bolt of camshaft timing belt pulley and camshaft after camshaft employing locating clamp plate location, bent axle employing fastening screw location and the Timing Belt tensioning, therefore can improve the setting accuracy of engine timing phase place.

2) this engine timing train is installed because of camshaft timing belt pulley and being connected of camshaft cancelling locating stud and is only adopted bolt to connect, before Timing Belt is installed, the connecting bolt of camshaft timing belt pulley and camshaft is not tightened, the camshaft timing belt pulley can arbitrarily rotate, and the Timing Belt of therefore packing into is very convenient.

Description of drawings

Fig. 1 determines the location schematic representation of camshaft when the first cylinder top dead center;

Fig. 2 determines the location schematic representation of bent axle when the motor first cylinder top dead center:

Fig. 3 is the structural representation of whole engine timing train.

Embodiment

(1), determine the location of camshaft when the first cylinder top dead center referring to Fig. 1: make on the camshaft determine positive and negative direction platform 3 upwards, to determine the approximate location of camshaft when the first cylinder top dead center;

Block admission cam shaft and the exhaust cam shaft side of location 2a, 2b respectively with two bayonet sockets on the locating clamp plate 4, the edge of locating clamp plate 4 is against on the cylinder head 1, has so just determined the exact position of camshaft when the first cylinder top dead center.

(2) referring to Fig. 2, determine the location of bent axle when the motor first cylinder top dead center: the positioning pin hole on positioning pin hole on the flywheel 7 and cylinder body 5 is on time, the positioning pin hole that adopts fastening screw 6 to insert on cylinder body and the flywheel, this moment, bent axle promptly was fixed, and the position when making the first cylinder piston be in top dead center;

(3) referring to Fig. 3, behind the first cylinder top dead center camshaft, bent axle location, load onto bent axle Timing Belt wheel 10 and camshaft timing belt pulley 8, camshaft timing belt pulley 8 adopts bolt with being connected of camshaft, do not tighten earlier, locating stud and bolt are adopted in being connected of bent axle Timing Belt wheel 10 and bent axle, and bolt is tightened.

(4) refill Timing Belt 12, idle pulley 11 and Idle wheel 9, regulate the degree of tightness of Timing Belt 12, and tighten the Idle wheel bolt with Idle wheel 9; Move with Timing Belt and rotate at tensioning Timing Belt process convexity wheel shaft Timing Belt wheel 8, the Timing Belt each several part obtains tensioning.

(5) connecting bolt of fastening camshaft timing belt pulley 8 and camshaft takes off locating clamp plate 4 and fastening screw 6 then, finishes the timing train and installs.

Claims

1, timing gear installing method for engjine is characterized in that installing according to the following steps:

(1) determine the location of camshaft when the motor first cylinder top dead center: make on the camshaft determine direction platform upwards, adopt locating clamp plate to block location side on the camshaft, to determine the exact position of camshaft when the first cylinder top dead center;

(2) determine the location of bent axle when the motor first cylinder top dead center: when the positioning pin hole on the flywheel and the positioning pin hole on the cylinder body on time, adopt the positioning pin hole on fastening screw insertion cylinder body and the flywheel, this moment, bent axle promptly was fixed, and the position when making the first cylinder piston be in top dead center;

(3) behind the motor first cylinder top dead center camshaft, bent axle location, load onto bent axle Timing Belt wheel and camshaft timing belt pulley, the camshaft timing belt pulley adopts bolt with being connected of camshaft, do not tighten earlier, locating stud and bolt are adopted in being connected of bent axle Timing Belt wheel and bent axle, and bolt is tightened;

(4) refill Timing Belt, idle pulley and Idle wheel, regulate the degree of tightness of Timing Belt, and tighten the Idle wheel bolt with Idle wheel; Move with Timing Belt and rotate at tensioning Timing Belt process convexity wheel shaft Timing Belt wheel, the Timing Belt each several part obtains tensioning;

(5) connecting bolt of fastening camshaft timing belt pulley and camshaft takes off locating clamp plate and fastening screw then, finishes the timing train and installs.