2023Jakarta International Export

Jakarta International Export Date:5-24 to 5-26 Booth number:A3M3-08 Welcome customer and friend to visit

24 May-2023

Common failure of timing gear

Common failure of timing gear 1. The distance between the crankshaft and the camshaft changes, causing the meshing clearance of the timing gear to be too large or too small. 2. The crankshaft and camshaft axis are not parallel, and the gear is worn, which makes the timing gear mesh nonuniform. 3. The gear engagement position is changed after replacing the crankshaft and camshaft bearings. 4. The axial clearance of the camshaft is too large, and the fixed nut of the timing gear is loose, resulting in axial translocation of the gear or damage of gear teeth. ZHONGKING.Timing gear series 1. t adopts excellent materials, high density and long operation life. 2. The core has good tenacity and impact resistance, which can solve abnormal noise and reduce noise. 3. Accurate tooth pitch, compact size, not easy to deform, and good load-bearing function.

10 March-2023

2023 Automechanika

Welcome 2023 Automechanika China.Shenzhen 15/2/2023-18/2/2023 Booth No. 10B45 Wenzhou Zhongking Parts Co.,Ltd

13 February-2023

Timing chain destruction

1. Remove the upper cover of the camshaft timing chain. 2. Use a tool to remove the control valve bolts (left-hand thread) in the direction shown by the arrow in the figure. 3.Just as shown, unscrew the bolts on the bearing bridge and remove the bearing bridge. 4. Turn the pulley/shock absorber to top dead center position with the retaining bracket. At this time, the notch of the shock absorber must be aligned with the arrow mark on the lower cover of the timing chain, and the camshaft timing mark 1 must point upward. 5. Remove the timing chain lower cover. 6. Press in the oil pump chain tensioner in the direction indicated by the arrow and lock it with positioning pin 2, remove the oil pump chain tensioner 1, and take off the oil pump drive chain. 7. Insert a scribe or a suitable screwdriver into the hole of the chain tensioner in the direction indicated by arrow 1 to raise the locking lever of the timing chain tensioner. Press in the tensioner arm in the direction indicated by the arrow 2 and fix it with the positioning pin 3. 8. Remove the tensioner arm and camshaft timing chain guide, and remove the camshaft timing chain. 9. As shown, remove the chain tensioner 1, tensioner arm 2, guide rails 3 and 4 of the balance shaft timing chain, and remove the balance shaft timing chain.

19 December-2022

Dual VVT-i

Dual VVT-i ◆ The VVT-i system only controls and adjusts the timing of the intake valve, while the dual VVT-i system controls and adjusts both the intake and exhaust valves. Relatively speaking, the dual VVT-i system can make the engine run more efficiently. ◆ The dual VVT-i system of Toyota Corolla can control the intake system and exhaust system of the engine separately. During rapid acceleration, the VVT-i that controls the intake will advance the intake, while the VVT-i that controls the exhaust will delay the exhaust. This effect is like a smaller turbocharger, which can effectively increase the engine power. At the same time, due to the increase of the intake air volume, the combustion of gasoline is more complete and the purpose of low emission is achieved. ◆ The engine ECU calculates an optimal valve timing according to the engine speed, intake air volume, throttle position and water temperature, and sends control instructions to the camshaft timing oil control valve. The camshaft timing oil control valve selects different oil circuits to the VVT-i controller according to the commands sent out, so that it is in advance, lag or maintain three different working states. In addition, the engine ECU detects the actual valve timing based on the signals from the camshaft and crankshaft position sensors to perform feedback control as much as possible so as to obtain the predetermined variable valve timing.

22 November-2022