CN201100179Y - Automobile engine cylinder head - Google Patents

Abstract

The utility model belongs to an automobile engine, in particular a cylinder cover of an automobile engine, which comprises an air outlet valve seat, a blast chamber, an air inlet valve seat and a spark plug hole. The cylinder cover is characterized in that a coolant channel is opened on the bottom face of the cylinder cover along the periphery of the blast chamber. The coolant channel is divided into a coolant channel which passes nearby the air inlet valve outside the blast chamber and a coolant channel which passes nearby the air outlet valve outside the blast chamber. One end of each channel is relative to water jacket intercommunicating water holes on the cylinder body, the other end of each channel is provided with water holes which are provided with a cylinder cover water jacket below. The coolant which comes upwards from the cylinder body firstly sweeps through places which are mostly heated such as the lower edge of the blast chamber, the air outlet valve, the spark plug and the like to cool the places well. Coolant which enters into the cylinder cover water jacket cools the upper portion of the blast chamber and air passages, thereby achieving the engine power performance, the economy, the reliability and the service life which are designed under the confluent function of the upper and lower sides. The cylinder cover of the automobile engine is reasonable in structure, great in cooling effect, safe and reliable.

Description

Automobile engine cylinder head

technical field

The utility model belongs to the manufacturing category of automobile engines, in particular to a cylinder head of an automobile engine.

Background technique

At present, gasoline engines of automobiles work under high speed, high load, and high heat load, especially the combustion chamber, exhaust valve, and spark plug on the cylinder head must bear extremely high heat load, and the engine needs to play a good power performance Proper and effective cooling of the above-mentioned structures is crucial for , economical and safe, reliable and durable operation. The traditional design is to set a water jacket in the cylinder head. Due to the limited structure and space, it is often impossible to cool the exhaust valve and the spark plug that need to be strengthened most. Serious accidents such as valve ablation, so that the performance of the engine cannot meet the requirements of use. Especially for small-displacement engines, this contradiction is even more prominent.

Contents of the invention

The purpose of the utility model is to provide an automobile engine cylinder head with reasonable structure, good cooling effect, safety and reliability aiming at the deficiencies of the prior art.

The technical scheme of the utility model is as follows:

A cylinder head of an automobile engine has an exhaust valve seat, a combustion chamber, an intake valve seat, and a spark plug hole. The coolant channel near the intake valve and the coolant channel near the exhaust valve pass through the combustion chamber. One end of the two channels is opposite to the communication hole of the water jacket on the cylinder block, and the other end has a water hole. The corresponding bottom is the cylinder head water hole. set.

In the utility model, two coolant passages are provided on the bottom surface of the cylinder head along the combustion chamber. When the cylinder head is assembled on the cylinder block, a corridor of coolant is formed between each passage on the cylinder head and the top surface of the cylinder block. One end of the two passages is opposite to the communication hole of the water jacket on the cylinder block. The coolant coming up from the water jacket of the cylinder block passes through the two corridors and reaches the hole at the other end, and enters the water jacket in the cylinder head through the vertical passage through the holes. It can be seen that the coolant from the cylinder block first sweeps through the lower edge of the combustion chamber, the exhaust valve, the spark plug and other places that are most heated, so that they are well cooled, and the coolant that enters the cylinder head water jacket cools the upper part of the combustion chamber and the air passage. , under the confluence of the upper and lower sides, the designed engine power, economy, reliability and service life are achieved. The utility model has the advantages of reasonable structure, good cooling effect, safety and reliability.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Figure 2 is a cross-sectional view of the center of the exhaust valve seat and the center of the spark plug hole.

Figure 3 is a cross-sectional view through the center of the intake valve seat.

Detailed ways

As shown in Figures 1, 2, and 3, a cylinder head of an automobile engine includes an exhaust valve seat 5, a combustion chamber 3, an intake valve seat 2, and a spark plug hole 4. Coolant channel 1. The coolant channel is divided into the coolant channel near the intake valve around the combustion chamber and the coolant channel near the exhaust valve around the combustion chamber. One end of the two channels is opposite to the water jacket communication hole on the cylinder block. The other end has a water hole 6, and the corresponding bottom is a cylinder head water jacket and a cylinder head water jacket 7.

Claims (1)

1, a kind of cylinder cover of automobile engine, comprise delivery valve seat (5), firing chamber (3), inlet valve seat (2), spark-plug hole (4), it is characterized in that: outside the firing chamber, offer cooling passage (1) in the cylinder head bottom surface, cooling passage is divided into through near cooling passage the peripheral suction valve in firing chamber and near the cooling passage the peripheral outlet valve in firing chamber, two passages, one end is relative with cylinder block upper water sleeve connection water hole, the other end has water port (6), and corresponding below is cylinder head jacket (7).

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