China wholesale Rotary vane vacuum pump Suppliers – Toyota Hilux 3l/5l 29300-54180 – Xinli

Automotive vacuum pump working principle.

Petrol-engined vehicles generally use an ignition engine, so a relatively high vacuum pressure can be generated at the intake stubs, which can provide a sufficient source of vacuum for the vacuum-assisted braking system.

In the case of diesel powered vehicles, however, the engine is compression ignition so the same level of vacuum pressure cannot be provided at the intake stubs and a vacuum pump is required to provide a source of vacuum. There are also vehicles with engines designed to meet certain environmental requirements for vehicle emissions, which also require a vacuum pump to provide a sufficient source of vacuum to ensure that the vehicle can run properly.

The output of the vacuum pump is mainly the pressure generated by the power servo system. However, when the vacuum pump is not working properly, the hydraulic system can still be driven by human power to act as a booster

Q1. What is your packaging method?
A: In general, we pack our goods in neutral white boxes and brown cardboard boxes. If you have a legally registered patent, we can pack the goods in your branded boxes after obtaining your letter of authorisation.

Q2. What are your payment terms?
A: T/T 30% as deposit and 70% before delivery. We will show you photos of the product and packaging before you pay the balance.

Q3. What are your delivery terms?
A: exw, fob, cfr, cif, ddu, ddp.

Q4. What is your delivery time?
A: Generally speaking, it takes 10 to 15 days after receiving your advance payment. The exact delivery time depends on the items and quantities you have ordered.

Q5. Can you produce from samples?
A: Yes, we can produce according to your samples or technical drawings. We can make moulds and jigs.

Q6. What is your sample policy?
A: If we have ready-made parts in stock, we can provide samples, but the customer must pay for the sample and courier costs.