Fire Risk car

Let’s know about Minivans for fire risk.

Chrysler's popular minivans are the subject of a new recall that follows two other recent recalls by the domestic automaker.

The 2008-2009 Chrysler Town & Country and Dodge Grand Caravan are being recalled for a problem with wiring. In some vehicles from those model years--the vehicles in question were built between February and September of 2007--the wiring harness was not routed properly, which can lead to contact with the sliding side door. If the harness casing is worn through, the door latch could overheat, and a fire could result.

Reuters reports as many as 284,831 minivans might be affected.

Chrysler will repair vehicles for free, starting this month. Owners can contact the automaker at 800-853-1403, or the National Highway Traffic Safety Administration (NHTSA) at 888-327-4236.

Chrysler's also recalling two other model lines--some 2007 Dodge Caliber and Jeep Compass compacts are being brought back for sticky throttle pedals, and the 2007-2010 Jeep Wrangler is being recalled for leaking brakes.

 

Popular Mazda mini MPV

Here's about Mazda mini MPV.

In Japan, the Mazda MPV is known, marketed, and sold as the Efini MPV. This vehicle first made its way to public knowledge in 1989. It was constructed to be a rear wheel drive vehicle. Later on in 2000, it came back with a more modern front wheel drive. Originally, the Mazda MPV was designed in its every minute detail as a minivan. This was destined to be sold to the American market.

The Mazda MPV was first constructed using Mazda’s best platform that time. The company used the Mazda 929’s HC to be able to develop and start out the Mazda MPV’s LV platform. Later on in the design and construction process for this vehicle, the Mazda MPV was equipped with a V6 engine and an optional all wheel drive. This vehicle features traditional hinged doors instead of the sliding rear doors.

Making waves with the press, the Mazda MPV then earned its way to being named a part of the Car and Driver magazine’s Ten Best list for two consecutive years – 1990 and 1991. This magazine also featured the Mazda MPV as one of their “vehicles for the coming (fuel) crisis”. However, on the other hand, the Mazda MPV made a big unwanted splash with crash testers. Out of the four stars that a vehicle could receive from the Australian ANCAP crash test, the Mazda MPV only received one little star. As for the American IIHS crash tests, the vehicle received a poor “Marginal” rating. The sales for this vehicle went really well however it rapidly declined come the period when other automobile manufacturers started constructing and introducing to the market all wheel drivers and V6 engines.

In 1996, this vehicle underwent a refreshing. The I4 engine went into retirement and it was replaced with a similar engine – a 2.5 liter unit. Come the year 2000, the Mazda MPV came with a front wheel drive LW platform that was based on the Mazda 626. This set of Mazda MPVs was considered to be the second in this model’s generation. It came this time to be more traditional than the first batch. It held sliding rear doors and a front wheel drive. However, what was different for this generation includes a rear seat that folds flat into the floor and rear door windows that are rolled down. In 2002, the changes for the vehicle included a change in power by using the Mazda AJ 3.0 liter V6 engine along with a 5-speed automatic transmission. This now has the capacity to produce 200 horsepower and 200 pound feet of torque. Other than that, upgrades included a larger grille that sported a single chrome bar at the top, a more aggressive look and new headlights and tail lights.

Mazda MPV specification

MAZDA MPV 2500 cc V6 engine, smooth engine 1999 reg 2001 white, vacuum sliding doors, leather Seat, luxury, high spec, new tyres, in good condition, have a look with our car then make compare, RM55k neg.

Diesel engine with 2-stroke in Mazda MPV

Above is about 2-stroke engine in Mazda MPV

As the name suggests, these engines work on reciprocating actions of pistons. One stroke means one linear motion of the piston in one direction. When the piston moves in the opposite direction, that is counted as another stroke.

For a 2-stroke engine, the piston has to move up, and then down to complete one cycle of the engine. In those 2 strokes of the piston, the crankshaft will have turned 1 revolution.

The 2 strokes of the piston is to complete 4 stages of the combustion cycle - air intake, compression, combustion and exhaust. As you might have known, in order for a fire (or explosion) to occur to power the engine, we need a fuel, a heat source, and oxygen coming together at the same time.

Remember how the crankshaft and the piston moves in a cylinder? The reciprocating movement of the piston is converted to rotary motion by means of a crankshaft. The piston reciprocates between Top Dead Center and Bottom Dead Center inside the cylinder liner.

One of the most prominent feature of a 2-stroke engine is the presence of air intake ports on the cylinder liner that will enable fresh air to be led in for combustion.

These air inlet ports are cut into the cylinder liner somewhere at the lower end of the latter. In a typical design, the air inlet port are located about 35 degrees from the Bottom Dead Center (BDC).

In many designs, the fresh air that is introduced into the cylinder is also used to drive out the spent exhaust gases inside it. Many designs make use of scavenging air fans like electric blowers or turbochargers to slightly pressurize the intake air before the latter is introduced into the cylinder.

In order to allow the exhaust gases to be expelled from the cylinder, exhaust ports are often cut into the cylinder just like the air intake ports. A typical design will have the exhaust port located about 50 degrees from Bottom Dead Center.

So, let's describe our engine stages at the combustion space between the piston top and the cylinder head.

From Bottom Dead Center (BDC), the piston, full of fresh air, moves up the cylinder liner until it covers up the air intake port. The air intake process stops.

The piston moves further up. It then covers up the exhaust port on the cylinder liner. The exhaust process stops.

The piston moves further up. The air inside the combustion space is compressed and becomes hot. The piston has nearly reached Top Dead Center at this point.

Highly atomized fuel is then injected into the combustion space. The fuel burns rapidly causing an explosion inside the combustion space. The explosion causes a tremendous rise in pressure and the piston is pushed down towards BDC.

As the piston moves down, the exhaust ports uncover about 50 degrees from BDC. Exhaust gases are thus led out from the cylinder. The pressure inside the cylinder drops immediately.

The piston moves further down. At 35 degrees from BDC, it uncovers the air intake port. Fresh air is then led into the cylinder.

The piston then reaches BDC. Because of the momentum created from the force of the explosion, the piston reverses in direction and moves upwards towards Top Dead Center (TDC).

The process then repeats itself.

In some designs, the exhaust gases are removed through an exhaust valve, located at the cylinder head and very similar to the 4-stroke engines. This type of scavenging is called uniflow scavenging. The timing of the valve opening and closing will be controlled by a camshaft, push rods, rocker arms or other similar devices.