Under different engine operating conditions, the ability of a spark plug to ignite the air-fuel mixture is essential for proper engine performance. In practice, as long as the voltage across the spark plug electrodes reaches 10,000 to 20,000 volts and the electrode gap is maintained between 0.6 and 0.7 mm, the spark energy produced will be sufficient to reliably ignite the mixture under various conditions. To ensure consistent and high-quality sparks, several key measures should be taken:
First, the contact gap of the breaker must be properly adjusted. The breaker contacts are in series with the low-voltage circuit. When closed, they should allow a current of 3 to 5 A. If the gap is too large, the contact time is shortened, preventing the current from reaching its stable value, which weakens the magnetic field and reduces the secondary voltage. On the other hand, if the gap is too small, excessive sparking occurs at the contact points, also lowering the secondary voltage. For homemade spark plugs, the ideal contact gap is typically 0.35 to 0.45 mm. Additionally, oxidation or damage on the contact surface increases resistance, while uneven or misaligned contacts, insufficient contact area, or a weak contact spring can all reduce the low-voltage current.
Second, the capacitor must be in good condition. It is connected in parallel with the breaker contacts to suppress the self-induced electromotive force that occurs when the contacts open. This helps eliminate arcing at the contact points and allows the primary coil’s magnetic field to collapse quickly. Without the capacitor, the self-induced voltage could cause arcing, delaying the interruption of the primary current and reducing the secondary voltage. A properly sized capacitor absorbs most of this induced voltage, minimizing contact wear and increasing the secondary voltage to ensure reliable ignition. If the capacitor is too small, it may lead to contact erosion.
Third, it's important to prevent high-voltage leakage. In addition to sub-sparks, the distributor cap and high-voltage wires must maintain good insulation. Carbon deposits on the spark plug act as a shunt resistance, reducing the secondary voltage by allowing some of the voltage to leak through the deposits before reaching the spark gap. Severe carbon buildup can prevent the spark from forming altogether. Therefore, during maintenance, it's crucial to clean any carbon deposits from the spark plugs to maintain optimal performance and ignition efficiency.
Sunction Connection Tube
Disposable Medical PVC External Suction Connecting Tube with Yankauer Handle
Material: PVC Plastic
Catheter Material:Medical grade PP material
Size:1.8m,2.5m,3m,3.6m
Color: Transparent or frosted
Cap:with or without cap
Type of tip:Crown tip or plain tip
Type of connector:Standard connector/Cut to fit connector
Type of handle: With or without finger control
Sterile:EO sterilized or non-sterilized
Package: Individual package or bulk package
Sunction Connection Tube,External Suction Connecting Tube,PVC Suction Connecting Tube,Medical Suction Connecting Tube
Luck Medical Consumables Co.,LIMITED , https://www.luckmedical.com